Yes, ESCROW is a Scrabble word!

Letter values in Scrabble US: E 1, S 1, C 3, R 1, O 1, W 4.

Is it a valid word?

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

a written agreement (or property or money) delivered to a third party or put in trust by one party to a contract to be returned after fulfillment of some condition