Yes, ALBACORE is a Scrabble word!

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

Is it a valid word?

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

relatively small tuna with choice white flesh; major source of canned tuna
large pelagic tuna the source of most canned tuna; reaches 93 pounds and has long pectoral fins; found worldwide in tropical and temperate waters

Also: long-fin tunny, thunnus alalunga.