Yes, PANDAS is a Scrabble word!

Letter values in Scrabble US: P 3, A 1, N 1, D 2, A 1, S 1.

Is it a valid word?

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

large black-and-white herbivorous mammal of bamboo forests of China and Tibet; in some classifications considered a member of the bear family or of a separate family Ailuropodidae
reddish-brown Old World raccoon-like carnivore; in some classifications considered unrelated to the giant pandas

Also: giant panda, panda bear, coon bear, ailuropoda melanoleuca, lesser panda, red panda, bear cat, cat bear, ailurus fulgens.