Yes, PURANAS is a Scrabble word!

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

Is it a valid word?

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

a body of 18 works written between the first and 11th centuries and incorporating legends and speculative histories of the universe and myths and customary observances