Yes, PARIS is a Scrabble word!

Letter values in Scrabble US: P 3, A 1, R 1, I 1, S 1.

Is it a valid word?

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

the capital and largest city of France; and international center of culture and commerce
sometimes placed in subfamily Trilliaceae
(Greek mythology) the prince of Troy who abducted Helen from her husband Menelaus and provoked the Trojan War
a town in northeastern Texas

Also: city of light, french capital, capital of france, genus paris.