Yes, BOBBLING is a Scrabble word!

Letter values in Scrabble US: B 3, O 1, B 3, B 3, L 1, I 1, N 1, G 2.

Is it a valid word?

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

Also: botch up, screw up, ball up, muck up, bollix up, bollocks up, louse up, foul up, mess up, fuck up.

Not playable in Scrabble US: BODGE.