Yes, NOCTUIDS is a Scrabble word!

Letter values in Scrabble US: N 1, O 1, C 3, T 1, U 1, I 1, D 2, S 1.

Is it a valid word?

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

usually dull-colored medium-sized nocturnal moth; the usually smooth-bodied larvae are destructive agricultural pests

Also: noctuid moth, owlet moth.