Yes, TRAVELLED is a Scrabble word!

Letter values in Scrabble US: T 1, R 1, A 1, V 4, E 1, L 1, L 1, E 1, D 2.

Is it a valid word?

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

change location; move, travel, or proceed, also metaphorically
undertake a journey or trip
make a trip for pleasure
travel upon or across
undergo transportation as in a vehicle
travel from place to place, as for the purpose of finding work, preaching, or acting as a judge

Also: move around.