Choppers current bounty is 1,000 berries. Choppers first bounty was a mere 50 berries, as he was mistaken for a pet. Most of his activity at Enies Lobby, where most of the Straw Hats gained a bounty, was conducted while in Rumble Ball forms and due to his Devil Fruit, and thus his true form was not considered a threat due to being unrecognized by the World Government. Following Dressrosa, Choppers bounty grew to 100 berries, still nowhere near as high as his fellow Straw Hats. However, after the Wano Country arc, his new bounty is only 1,000 berries. The reason behind his low bounty might be a misunderstanding. Either the World Government still thinks Chopper is nothing more than a pet, or is afraid of people killing raccoons to claim Choppers bounty.