Yes, EMBOSSMENTS is a Scrabble word!

Letter values in Scrabble US: E 1, M 3, B 3, O 1, S 1, S 1, M 3, E 1, N 1, T 1, S 1.

Is it a valid word?

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

an impression produced by pressure or printing
sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background

Also: sculptural relief.