Yes, THRIPS is a Scrabble word!

Letter values in Scrabble US: T 1, H 4, R 1, I 1, P 3, S 1.

Is it a valid word?

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

any of various small to minute sucking insects with narrow feathery wings if any; they feed on plant sap and many are destructive
any of various small to minute sucking insects with narrow feathery wings if any; they feed on plant sap and many are destructive

Not playable in Scrabble US: THRIPID.