Yes, JEROBOAM is a Scrabble word!

Letter values in Scrabble US: J 8, E 1, R 1, O 1, B 3, O 1, A 1, M 3.

Is it a valid word?

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

(Old Testament) first king of the northern kingdom of Israel who led Israel into sin (10th century BC)
a large wine bottle (holds 4/5 of a gallon)

Also: jeroboam i, double-magnum.