Well thanks to bubbalex I've made over 3000$ from bounties since 2019 and high percentage of the money came from bubbalex bounty campaigns like Ferrum Network, Cartesi and DIA, I earned little money from other bounties like ARCS, YOUC, Airwallet etc
It's good to hear some people make such good money out of bounty. From the projects you have been participated in, I can say that choosing the projects and BMs is really important if you want to make money this way.