Dad Passed Down 90s/2000s Sports Cards – Where Do I Check Prices?

My dad recently passed down a big collection of sports cards to me — mostly from the 90s and early 2000s. We’re talking hundreds of cards across different sports. I’m new to collecting and have no idea where to start when it comes to checking their value. I don’t have any intention of selling these as I want to pass them down to my own son in the future but I would love to see what are the prices of these. I know it depends on the condition of each card but they’re all in very nice shape

Are there any good websites or apps that I can use to look up card prices and see if anything I have is worth something? I’ve heard the 90s were kind of the “junk wax era,” but I’d still like to learn more and see what I’ve got.

Anything you recommend I appreciate it. Thank you