Yes, PAVISES is a Scrabble word!

Letter values in Scrabble US: P 3, A 1, V 4, I 1, S 1, E 1, S 1.

Is it a valid word?

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

(Middle Ages) a large heavy oblong shield protecting the whole body; originally carried but sometimes set up in permanent position
(Middle Ages) a large heavy oblong shield protecting the whole body; originally carried but sometimes set up in permanent position