I have a topps 2001-2002 babe ruth card #tn30 I'm just curious if it is worth anything

You can go to a card collectors store and they have books that will tell you how much they are worth

Of course since George Ruth ( babe) died in I think 1943, this has to be some reproduction of original cards at best.

In support of and in addition to what Fr_Chuck has stated above, unfortunately it's probably not worth all that much since it wasn't made when the player was living. People that manufacture collectible cards are trying to sell their goods. It's about making money for them. If they think that people will buy something, they will make it.

If you look down at the bottom of this page, you will see a link to another question about a Babe Ruth Card. You might want to click on it and then the subsequent links that you find. You might find some helpful information on the sites.