get scoped service

public static IServiceCollection RegisterCommandHandlers(this IServiceCollection services, Assembly assembly, Type compareType)
{
    services.AddScoped<ICommandHandler<CreateCommand>, CreateCommandHandler>(); // i have multiple registrations , this is a sample one jic

    CommandDispatcher dispatcher = new();
    foreach (var commandHandlerType in assembly.GetTypes()
         .Where(type => type.GetInterfaces()
             .Any(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(ICommandHandler<>))))
    {
        var commandType = commandHandlerType.GetInterfaces()
            .Single(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(ICommandHandler<>))
            .GetGenericArguments()[0];
        Type genericType = typeof(ICommandHandler<>).MakeGenericType(commandType);
        var commandHandler = services.BuildServiceProvider().GetRequiredService(genericType); //tried doing this beacuse idk what im doing

        var handleAsyncMethod = commandHandlerType.GetMethod("HandleAsync");

        if (handleAsyncMethod != null)
        {
            var handleDelegate = (Func<object, Task>)handleAsyncMethod.CreateDelegate(
              typeof(Func<object, Task>).MakeGenericType(commandType, typeof(Task)),
                commandHandler);

            dispatcher.RegisterHandler(commandType, handleDelegate);
            Console.Write("Registered a delegate");
        }

        else
        {
            Console.Write("here");
        }
    }

    services.AddSingleton<ICommandDispatcher>(_ => dispatcher);
    return services;

}

public static IServiceCollection RegisterCommandHandlers(this IServiceCollection services, Assembly assembly, Type compareType)
{
    services.AddScoped<ICommandHandler<CreateCommand>, CreateCommandHandler>(); // i have multiple registrations , this is a sample one jic

    CommandDispatcher dispatcher = new();
    foreach (var commandHandlerType in assembly.GetTypes()
         .Where(type => type.GetInterfaces()
             .Any(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(ICommandHandler<>))))
    {
        var commandType = commandHandlerType.GetInterfaces()
            .Single(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(ICommandHandler<>))
            .GetGenericArguments()[0];
        Type genericType = typeof(ICommandHandler<>).MakeGenericType(commandType);
        var commandHandler = services.BuildServiceProvider().GetRequiredService(genericType); //tried doing this beacuse idk what im doing

        var handleAsyncMethod = commandHandlerType.GetMethod("HandleAsync");

        if (handleAsyncMethod != null)
        {
            var handleDelegate = (Func<object, Task>)handleAsyncMethod.CreateDelegate(
              typeof(Func<object, Task>).MakeGenericType(commandType, typeof(Task)),
                commandHandler);

            dispatcher.RegisterHandler(commandType, handleDelegate);
            Console.Write("Registered a delegate");
        }

        else
        {
            Console.Write("here");
        }
    }

    services.AddSingleton<ICommandDispatcher>(_ => dispatcher);
    return services;

}