It credits it within faucetfly, on the top right there should be a tab that lets you check your address, once you claim enough you can send it, but you have to use the same btc address everytime
I'm not sure what the amount is but there is plenty of faucets on faucet fly.

There has been other javascript miners, litecoinpool had one but its no longer working, and there was other bitcoin ones, its good for high traffic areas.