Yes, SHOOFLIES is a Scrabble word!

Letter values in Scrabble US: S 1, H 4, O 1, O 1, F 4, L 1, I 1, E 1, S 1.

Is it a valid word?

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

an undercover police officer who investigates other policemen
a child's rocking chair with the seat built between two flat sides that are shaped to resemble an animal (such as a swan or duck)