If they upload it on a already existing free to use platform like mangago, bato or (rip) mangadex, no. They just do it for fun. If they have a website they run ads or have paid chapters on, they get money, tho not very much.
It depends on the scan, they mostly translate bc they want to, but there are some scans where they pay, the thing is that those are big scans, and there are others where readers donate to the translator when its a independent translation
Translators doing gods work
But I find it odd sometimes when translators compete to update a manhwa because it’s rather time consuming
Do the translator teams do translation on free will or they get a profit from it