Yes, FORTUNES is a Scrabble word!

Letter values in Scrabble US: F 4, O 1, R 1, T 1, U 1, N 1, E 1, S 1.

Is it a valid word?

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

an unknown and unpredictable phenomenon that causes an event to result one way rather than another
a large amount of wealth or prosperity
an unknown and unpredictable phenomenon that leads to a favorable outcome
your overall circumstances or condition in life (including everything that happens to you)