Yes, CAMBER is a Scrabble word!

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

Is it a valid word?

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

a slight convexity (as of the surface of a road)
a slope in the turn of a road or track; the outside is higher than the inside in order to reduce the effects of centrifugal force
the alignment of the wheels of a motor vehicle closer together at the bottom than at the top