Yes, PLUTEUS is a Scrabble word!

Letter values in Scrabble US: P 3, L 1, U 1, T 1, E 1, U 1, S 1.

Is it a valid word?

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

a large genus of fungi belonging to the family Pluteaceae; the shape of the cap resembles a roof; often abundant early in the summer

Also: genus pluteus, roof mushroom.