Etherscan is the most used I guess.
By pasting your Ethereum addresses there you will see if your bounty tokens have made a value. It won't waste time much if you'll check and hope that someday it will have a dollar value and that's what OP is conveying with his message. But if you have lost hope and you don't think that there's still something to wait for those bounty tokens, just leave it and move on.
Been checking my altcoins in here back then and yes they show it in USD so that people know how much does the token cost.
Was checking my AION tokens when I joined their bounty back in 2017.
But now I don't have that many altcoins because I believe that many lost their value or dried up already.
Yet you still saw the value of your aions in USD. Did you start selling it when you have learned that it's already have an equivalent in USD? Most bounty hunters I think do practice checking through any of those explorers with the hope that someday their tokens will have value.
It won't hurt to check it from day to day but if there's no help and you think that it's just a waste of time, you can give up and move on.
I keep checking my wallet address now and then to check whether a new coin has popped in. Checking my wallet address on etherscan gets me discouraged seeing the value. Some coins that I have, their token price reads about 0.00008 and you're having up-to 20,000 token.
If it's disappointing you, it's time to stop checking it.