Multiattack. The scorpion makes two Claw attacks and one Sting attack.
Claw. Melee Attack Roll: +5, reach 5 ft. Hit: 6 (1d6 + 3) Bludgeoning damage. If the target is a Large or smaller creature, it has the Grappled condition (escape DC 13) from one of two claws.
Sting. Melee Attack Roll: +5, reach 5 ft. Hit: 7 (1d8 + 3) Piercing damage plus 11 (2d10) Poison damage.
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