Yes, CLAMBAKE is a Scrabble word!

Letter values in Scrabble US: C 3, L 1, A 1, M 3, B 3, A 1, K 5, E 1.

Is it a valid word?

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

a cookout at the seashore where clams and fish and other foods are cooked--usually on heated stones covered with seaweed