Yes, SCOMBROID is a Scrabble word!

Letter values in Scrabble US: S 1, C 3, O 1, M 3, B 3, R 1, O 1, I 1, D 2.

Is it a valid word?

SCOMBROID is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

important marine food and game fishes found in all tropical and temperate seas; some are at least partially endothermic and can thrive in colder waters

Also: scombroid fish.