Yes, ROLLINGS is a Scrabble word!

Letter values in Scrabble US: R 1, O 1, L 1, L 1, I 1, N 1, G 2, S 1.

Is it a valid word?

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

move by turning over or rotating
move along on or as if on wheels or a wheeled vehicle
occur in soft rounded shapes
flatten or spread with a roller
emit, produce, or utter with a deep prolonged reverberating sound
arrange or or coil around
begin operating or running
shape by rolling
execute a roll, in tumbling
sell something to or obtain something from by energetic and especially underhanded activity
move in a wavy pattern or with a rising and falling motion
move about aimlessly or without any destination, often in search of food or employment
move, rock, or sway from side to side
cause to move by turning over or in a circular manner of as if on an axis
pronounce with a roll, of the phoneme /r/
boil vigorously
take the shape of a roll or cylinder
show certain properties when being rolled

Also: turn over, roll out, roll up.