Yes, FUCHSIA is a Scrabble word!

Letter values in Scrabble US: F 4, U 1, C 3, H 4, S 1, I 1, A 1.

Is it a valid word?

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

any of various tropical shrubs widely cultivated for their showy drooping purplish or reddish or white flowers; Central and South America and New Zealand and Tahiti