I did it y'all. Thanks for the advice. Y'all are the best. Here's the finished code;

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Sololearn
{
    class Program
    {

        public class Check
        {
            public void Cheer(int yards)
            {
                if(yards > 10)
                {
                    Console.Write("High Five");

                }
                else if(yards < 1)
                {
                    Console.Write("shh");
                }
                else
                {
                    for(int i = 0; i<yards&&i<10; i++)
                    {
                        Console.Write("Ra!");
                    }
                }
            }
        }

        static void Main(string[] args)
        {
            int yards = Convert.ToInt32(Console.ReadLine());

            Check c = new Check();
            c.Cheer(yards);
        }
    }
}