Bounty is like a casino ,you never know how your bet will do,sometimes you win,sometimes you lose ,especially nowdays when all crypto is going down and down ,so don't be surprised when at the end of a campaign you get nothing.
The honest truth is that a lot of people feel the more the number of projects they do bounty for the better, but they fail to realize that if you end up doing for few that are worth it, and you are able to utilize skills that would ensure you get something good from these ones, you will be better off than just joining social media campaign of any bounty either scam or not.
By using skills when it comes to bounty, I am talking about areas where you get to see very few people sharing stakes percentage; such as article, bug bounty, signature, and the likes. See yourself as an investor, check the viability of the project and availability of the product, as well as the legitimacy of the team and see if it won't pay you.