Yes, HICKEYS is a Scrabble word!

Letter values in Scrabble US: H 4, I 1, C 3, K 5, E 1, Y 4, S 1.

Is it a valid word?

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

a small inflamed elevation of the skin; a pustule or papule; common symptom in acne
a temporary red mark on a person's skin resulting from kissing or sucking by their lover

Also: love bite.