Who would win Godzilla or Avengers?

Godzilla would obliterate Marvel's Avengers. Godzilla can beat Odin and Heimdal with one hand tied. Godzilla's feats are unreal even for comic book universe.

Who is stronger Thor or Godzilla?

Although Godzilla conquers in height and weight, it is Thor who would come out as a winner because of his speed, skills, battle tactics, stamina, and weapons. Godzilla is resilient and immune to nuclear-level weapons, but Thor has physical and environmental powers that would be the end of Godzilla.