Yes, DASHBOARD is a Scrabble word!

Letter values in Scrabble US: D 2, A 1, S 1, H 4, B 3, O 1, A 1, R 1, D 2.

Is it a valid word?

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

protective covering consisting of a panel to protect people from the splashing water or mud etc.
instrument panel on an automobile or airplane containing dials and controls