Yes, CYPRUSES is a Scrabble word!

Letter values in Scrabble US: C 3, Y 4, P 3, R 1, U 1, S 1, E 1, S 1.

Is it a valid word?

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

a country on the island of Cyprus; 80% of the people are of Greek origin and 20% or Turkish origin
an island in the eastern Mediterranean

Also: republic of cyprus.