Yes, BUNCHBERRY is a Scrabble word!

Letter values in Scrabble US: B 3, U 1, N 1, C 3, H 4, B 3, E 1, R 1, R 1, Y 4.

Is it a valid word?

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

creeping perennial herb distinguished by red berries and clustered leaf whorls at the tips of shoots; Greenland to Alaska

Also: dwarf cornel, pudding berry, cornus canadensis.

Not playable in Scrabble US: CRACKERBERRY.