Yes, BARRATRIES is a Scrabble word!

Letter values in Scrabble US: B 3, A 1, R 1, R 1, A 1, T 1, R 1, I 1, E 1, S 1.

Is it a valid word?

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

traffic in ecclesiastical offices or preferments
the crime of a judge whose judgment is influenced by bribery
(maritime law) a fraudulent breach of duty by the master of a ship that injures the owner of the ship or its cargo; includes every breach of trust such as stealing or sinking or deserting the ship or embezzling the cargo
the offense of vexatiously persisting in inciting lawsuits and quarrels