By the way, I never see anyone address this here. This feat alone should put Thor at possibly star level:
He got hurled MFTL past stars in seconds, outside the Bifrost and before the Sakaar wormhole, effectively tanking an infinite mass punch:
We literally see him moving past stars at MFTL speed. He has no physical protection. He is moving in the opposite direction that the Bifrost took Hela, because she looked down at him as she moved past him. The Bifrost shards, which in this movie decapitated a dragon, bash Thor's head and arms. So we see the impact, and change of direction, and speed past stars each of which were light years away from each other. He also has not yet entered the Sakaar wormhole.