Yes, QUALITIES is a Scrabble word!

Letter values in Scrabble US: Q 10, U 1, A 1, L 1, I 1, T 1, I 1, E 1, S 1.

Is it a valid word?

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

an essential and distinguishing attribute of something or someone
a degree or grade of excellence or worth
a characteristic property that defines the apparent individual nature of something
(music) the distinctive property of a complex sound (a voice or noise or musical sound)
high social status