Yes, DROGUE is a Scrabble word!

Letter values in Scrabble US: D 2, R 1, O 1, G 2, U 1, E 1.

Is it a valid word?

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

a funnel-shaped device towed as a target by an airplane
a truncated cloth cone mounted on a mast; used (e.g., at airports) to show the direction of the wind
restraint consisting of a canvas covered frame that floats behind a vessel; prevents drifting or maintains the heading into a wind
a parachute used to decelerate an object that is moving rapidly

Also: wind sock, air sock, air-sleeve, wind sleeve, wind cone, sea anchor, drogue chute, drogue parachute.