Unable to get $count in http://localhost:xxxxx/odata/users/$count

I am using Odata with .NET 5.0. Odata version is : (Microsoft.AspNetCore.OData\8.0.1)

http://localhost:xxxxx/odata/users/$count, is not returning $count value

What is the best approach to set end points of $count and get value with http://localhost:xxxxx/odata/users/$count

My ODataController and Startup.cs files are below.

using Comman.TestData;
using Domain;
using Domain.BO;
using Domain.Service;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.OData.Query;
using System;
using System.Collections.Generic;
using System.Linq;
using AspNetCoreOData.Helper;
using Microsoft.AspNetCore.OData.Results;
namespace AspNetCoreOData.Controllers
{
    // [ApiController]
    // [Route("[controller]")]
    public class UsersController : ControllerBase
    {
        private readonly IMapperSession session;

        // 0. Decalare constant - 2000
        private const int batchSize = 2000;

        public UsersController(IMapperSession session)
        {
            this.session = session;
        }

        [HttpGet]
        // [EnableQuery()]
        public PageResult<User> Get(ODataQueryOptions options)
        {
            long? count = null;
            // 1. Get all IQuerable<User> from dao. 
            var userList = session.Users;

            // 2. Define Include/ExcludeIDs more than 5000
            List<int> includeIdsList = TestData.GetIncludeExcludeIdList();

            IQueryable<User> results = Enumerable.Empty<User>().AsQueryable();

            for (int i = 0; i < includeIdsList.Count; i = i + batchSize)
            {
                // 3. Split Include/ ExcludeIds in batch(constant - options.count)
                var items = includeIdsList.Skip(i).Take(batchSize).ToArray();

                IQueryable<User> getGridData = IQuerableHelper.GetGridData(userList, items, null);

                if (options.Filter != null)
                {
                    // 4.Apply Filter with Include / ExcludeIds in loop of batch.count and total includeId/ ExcludeId
                    results = results.Concat((IQueryable<User>)options.Filter.ApplyTo(getGridData, new ODataQuerySettings()));
                }
                else
                {
                    results = results.Concat(getGridData);
                }
            }

            if (options.OrderBy != null)
            {
                results = options.OrderBy.ApplyTo(results);  //perform sort 
            }

            if (options.Count != null && options.Count.Value)
            {
                count = options.Count.GetEntityCount(results).Value;
            }

            if (options.Skip != null)
            {
                results = options.Skip.ApplyTo(results, new ODataQuerySettings());  //perform skip 
            }

            if (options.Top != null)
            {
                results = options.Top.ApplyTo(results, new ODataQuerySettings());  //perform take 
            }

            return (new PageResult<User>(results, null, count));

        }
    }
}

using Domain.BO;
using Domain.NH;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.OData;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.OData.Edm;
using Microsoft.OData.ModelBuilder;
using Microsoft.OpenApi.Models;

namespace AspNetCoreOData
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            var connStr = Configuration.GetConnectionString("DefaultConnection");

            services.AddNHibernate(connStr);

            services.AddControllers()
                .AddOData(
                 opt => opt.Select()
                .SkipToken()
                .SetMaxTop(null)
                .Count()
                .Filter()
                .AddRouteComponents("odata", GetEdmModel()));


            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo { Title = "AspNetCoreOData", Version = "v1" });
            });

            // services.AddControllersWithViews();

        }

        IEdmModel GetEdmModel()
        {
            var odataBuilder = new ODataConventionModelBuilder();

            odataBuilder.EntitySet<User>("Users");

            odataBuilder.EntitySet<User>("Employee");

            odataBuilder.EntitySet<WeatherForecast>(nameof(WeatherForecast));

            return odataBuilder.GetEdmModel();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwagger();
                app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "AspNetCoreOData v1"));
            }

            app.UseRouting();

            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();

            });

        }
    }
}