you might get 1 btc, but it takes a long time because your account is also only a member, and if the bounty campaign that you follow is always successful and no one is a scam, you should participate in airdrop too, because it is the easiest way to get profit , but be careful because there are many bounty campaigns (especially from an ico) and scam airdrops, so they have to be smart in choosing both bounty and airdrop.