Yes, ORTHOEPY is a Scrabble word!

Letter values in Scrabble US: O 1, R 1, T 1, H 4, O 1, E 1, P 3, Y 4.

Is it a valid word?

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

the way a word or a language is customarily spoken
a term formerly used for the part of phonology that dealt with the `correct' pronunciation of words and its relation to `correct' orthography