It is worth in 2020, but for your main job and main income is not recommended to do at all. For every project they just give you below 100 bucks for every 3 months. This is really low compared to fixed jobs and in 2017 - 2018 it was really better and you could get more with just doing a single project, the difference is really insane.
If we compare the rewards from 2017 year ICO's then current year there is not really worth it but there are some bounties which pays hundreds monthly and about the token campaigns not really worth to be honest but still can try if they have free time to spend and bounties are not asking much posts like bitcoin signature campaign asks so its easy for someone to complete tasks.