Yes, PERSON is a Scrabble word!

Letter values in Scrabble US: P 3, E 1, R 1, S 1, O 1, N 1.

Is it a valid word?

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

a human being
a human body (usually including the clothing)
a grammatical category used in the classification of pronouns, possessive determiners, and verb forms according to whether they indicate the speaker, the addressee, or a third party