Yes, SENSORY is a Scrabble word!

Letter values in Scrabble US: S 1, E 1, N 1, S 1, O 1, R 1, Y 4.

Is it a valid word?

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

of a nerve fiber or impulse originating outside and passing toward the central nervous system
involving or derived from the senses
relating to or concerned in sensation