If it was last year, Air drops is the way to go on earning money. It's easy, fast, and no risk. But now? It's unlikely. Airdrops now is just a waste of time. If you participate on 50 airdrops, Probably 45 of those are just waste. and those 5 is still being determined. Because that coin must be listed on a exchange and even if it does. you will only earn around $2 which barely even covers the fees.
It's a sad story, we can't make too much money from airdrop and bounty. It is better to trade or hold altcoin to make a profit in this market. Bounty and airdrop are not as good as they used to be because new projects are so hard to succeed