Yes, CARDAMOMS is a Scrabble word!

Letter values in Scrabble US: C 3, A 1, R 1, D 2, A 1, M 3, O 1, M 3, S 1.

Is it a valid word?

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

rhizomatous herb of India having aromatic seeds used as seasoning
aromatic seeds used as seasoning like cinnamon and cloves especially in pickles and barbecue sauces

Also: elettaria cardamomum.