Yes, SNATCHES is a Scrabble word!

Letter values in Scrabble US: S 1, N 1, A 1, T 1, C 3, H 4, E 1, S 1.

Is it a valid word?

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

a small fragment
obscene terms for female genitals
(law) the unlawful act of capturing and carrying away a person against their will and holding them in false imprisonment
a weightlift in which the barbell is lifted overhead in one rapid motion
the act of catching an object with the hands

to grasp hastily or eagerly
to make grasping motions
take away to an undisclosed location against their will and usually in order to extract a ransom

Also: snatch up.