Yes, DESTINED is a Scrabble word!

Letter values in Scrabble US: D 2, E 1, S 1, T 1, I 1, N 1, E 1, D 2.

Is it a valid word?

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

headed or intending to head in a certain direction; often used as a combining form as in `college-bound students'
(usually followed by `to') governed by fate