Yes, WRENCHED is a Scrabble word!

Letter values in Scrabble US: W 4, R 1, E 1, N 1, C 3, H 4, E 1, D 2.

Is it a valid word?

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

twist or pull violently or suddenly, especially so as to remove (something) from that to which it is attached or from where it originates
make a sudden twisting motion
twist and compress, as if in pain or anguish
twist suddenly so as to sprain