Please help me. I want my friends to play and see my game.
Use the Unity Web Player . You should have had it installed when you downloaded the Unity Engine
If you do not have access to any web hosting, I think that is you simply want to show your game to your friend, making a Windows build would be the easiest way. Export to windows in a folder, then zip that folder. Then you should be able to send your game via email (if it’s small enough), dropbox or a file sharing service like mediafire.
Then your friends would need to download that zip file, unzip it, then double click the .exe to play your game 