If you want to do it at home and understand moving metals on a buffer wheel you can use a drill with a buffer on it and flitz to create friction and it will move most superficial scratching. You will get a high polish finish from doing that but it will patina back original to what it was with a little wear time.
If you want it truly polished back to a scratch free and like new the other fine folks here have already spoken the best advice... Zach for sure... I know he was away for a bit but checking messages so be patient if he does not respond promptly...