Yes, ACOLYTE is a Scrabble word!

Letter values in Scrabble US: A 1, C 3, O 1, L 1, Y 4, T 1, E 1.

Is it a valid word?

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

someone who assists a priest or minister in a liturgical service; a cleric ordained in the highest of the minor orders in the Roman Catholic Church but not in the Anglican Church or the Eastern Orthodox Churches