Yes, TIMBERS is a Scrabble word!

Letter values in Scrabble US: T 1, I 1, M 3, B 3, E 1, R 1, S 1.

Is it a valid word?

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

the wood of trees cut and prepared for use as building material
a beam made of wood
a post made of wood
land that is covered with trees and shrubs
(music) the distinctive property of a complex sound (a voice or noise or musical sound)