Yes, WOODRUFFS is a Scrabble word!

Letter values in Scrabble US: W 4, O 1, O 1, D 2, R 1, U 1, F 4, F 4, S 1.

Is it a valid word?

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

Old World fragrant stoloniferous perennial having small white flowers and narrow leaves used as flavoring and in sachets; widely cultivated as a ground cover; in some classifications placed in genus Asperula
any plant of the genus Asperula

Also: sweet woodruff, fragrant bedstraw, galium odoratum, asperula odorata.

Not playable in Scrabble US: WALDMEISTER.