Yes, BOLASES is a Scrabble word!

Letter values in Scrabble US: B 3, O 1, L 1, A 1, S 1, E 1, S 1.

Is it a valid word?

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

a cord fastened around the neck with an ornamental clasp and worn as a necktie
a rope with weights attached to the ends; is thrown to entangle the legs of an animal; of South American origin

Also: bolo tie, bola tie.