Yes, NOTATES is a Scrabble word!

Letter values in Scrabble US: N 1, O 1, T 1, A 1, T 1, E 1, S 1.

Is it a valid word?

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

put into notation, as of music or choreography; in the old days, the steps had to be memorized"