Yes, PLEASANCE is a Scrabble word!

Letter values in Scrabble US: P 3, L 1, E 1, A 1, S 1, A 1, N 1, C 3, E 1.

Is it a valid word?

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

a pleasant and secluded part of a garden; usually attached to a mansion
a fundamental feeling that is hard to define but that people desire to experience