Yes, BRYONY is a Scrabble word!

Letter values in Scrabble US: B 3, R 1, Y 4, O 1, N 1, Y 4.

Is it a valid word?

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

a vine of the genus Bryonia having large leaves and small flowers and yielding acrid juice with emetic and purgative properties