Yes, PLUCKING is a Scrabble word!

Letter values in Scrabble US: P 3, L 1, U 1, C 3, K 5, I 1, N 1, G 2.

Is it a valid word?

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

pull or pull out sharply
sell something to or obtain something from by energetic and especially underhanded activity
rip off; ask an unreasonable price
pull lightly but sharply with a plucking motion
strip of feathers
look for and gather

Also: pull off, pick off.

Not playable in Scrabble US: DEPLUMATE.