Yes, DIVINITY is a Scrabble word!

Letter values in Scrabble US: D 2, I 1, V 4, I 1, N 1, I 1, T 1, Y 4.

Is it a valid word?

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

any supernatural being worshipped as controlling some part of the world or some aspect of life or who is the personification of a force
the quality of being divine
white creamy fudge made with egg whites
the rational and systematic study of religion and its influences and of the nature of religious truth

Also: divinity fudge.