I think there's a story where for a reason or another, Odin and Galactus got into a fight, but they had to do a mind battle or somethin', 'cause them actually fighting each other would destroy the universe.
The Ultimate Alliance game gives a decent enough idea of the power Odin has, though mostly not himself using his powers ironically enough, since Doom steals his power in it, and he casually defeats everyone who tries to stop him, the way Doom abuses the power so carelessly was destroying the fabric of the universe, and the main characters only manage to have a fighting chance by getting parts of the stolen powers to themselves, and one of the "good future" endings have him showing up to stop Galactus alone... So yeah, I think that game can give a decent enough idea of how powerful Odin is, even if it only shows parts of his raw power with someone else using his power lol.