Yes, ETCHES is a Scrabble word!

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

Is it a valid word?

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

make an etching of
cause to stand out or be clearly defined or visible
carve or cut into a block used for printing or print from such a block
carve or cut a design or letters into
selectively dissolve the surface of (a semiconductor or printed circuit) with a solvent, laser, or stream of electrons