Yes, UNWRAP is a Scrabble word!

Letter values in Scrabble US: U 1, N 1, W 4, R 1, A 1, P 3.

Is it a valid word?

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

remove the outer cover or wrapping of
make known to the public information that was previously known only to a few people or that was meant to be kept a secret

Also: let on, bring out, give away, let out.