High Score is a rare Enchantment card from Teenage Mutant Ninja Turtles Eternal (TMC), collector number 29. Current market price: $0.94 (foil $2.00), TCGplayer market prices via Scryfall.
If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on it instead. At the beginning of your end step, draw a card if you control a creature with the greatest power among creatures on the battlefield.