If Goku were to go to the Marvel universe and become a herald of Galactus and learn how to use cosmic power, how far would he go in the Marvel Universe tier wise?
Who would be the strongest character he could defeat?
Galactus apparently, fro what I've heard from other readers gave a higher amount of cosmic power to Norin that he ever has done, and never gave anyone else more. Or it was he already gave a big amount to one Herald and because he turned he didn't give anyone else any more.
I'm digging that out of a memory that is old. So a bit of research and you could find out.
So he wouldn't get a lot, not more than Norin.