I don't think that there are 500 Bitcoin faucets right now. There may be 20 or 30 of them. And you might need to work 20-25 hours, in order to earn $5 worth of Bitcoins. When I first started collecting Bitcoins in 2012, I used to rely on these faucets. But after a month or so, it became clear that the faucets are just not worth the time and effort.
Are you sure there are only 20/30 of them? Take a look here
https://faucetbox.com/en/list This is only faucets that use faucetbox system. Think about how many pay directly or use paytoshi/xapo wallets. It's crazy how many there are! I was surprised myself.