Yes, TRUTHS is a Scrabble word!

Letter values in Scrabble US: T 1, R 1, U 1, T 1, H 4, S 1.

Is it a valid word?

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

a fact that has been verified
conformity to reality or actuality
a true statement
the quality of being near to the true value
United States abolitionist and feminist who was freed from slavery and became a leading advocate of the abolition of slavery and for the rights of women (1797-1883)

Also: the true, true statement, sojourner truth.