Yes, PODZOLS is a Scrabble word!

Letter values in Scrabble US: P 3, O 1, D 2, Z 10, O 1, L 1, S 1.

Is it a valid word?

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

a soil that develops in temperate to cold moist climates under coniferous or heath vegetation; an organic mat over a grey leached layer

Also: podzol soil, podsol soil, podsolic soil.