Yes, HAREBELLS is a Scrabble word!

Letter values in Scrabble US: H 4, A 1, R 1, E 1, B 3, E 1, L 1, L 1, S 1.

Is it a valid word?

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

sometimes placed in genus Scilla
perennial of northern hemisphere with slender stems and bell-shaped blue flowers

Also: wild hyacinth, wood hyacinth, hyacinthoides nonscripta, scilla nonscripta, campanula rotundifolia.