How many words start with SOO?

10, from 5 letters up to 5. All of them are on this page.

What is the highest scoring word that start with SOO?

SOOKS at 9 points in Scrabble, and SOOKS at 9 in Words With Friends, because the two games score the tiles differently.

SOOEY, SOOKS, SOOLE, SOOLS, SOOMS, SOOPS, SOOTE, SOOTH, SOOTS, SOOTY.

10 of them: SOOEY, SOOKS, SOOLE, SOOLS, SOOMS, SOOPS, SOOTE, SOOTH, SOOTS, SOOTY.

There are 10 of them. The highest scoring is SOOKS at 9 points in Scrabble, and the set averages 6.7.

Most common words first, then the rest A to Z.

The most familiar words on this page and what they mean. Tap any word for its full entry, score and anagrams.

SOOTH noun truth or reality
SOOTS noun form of SOOT: a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink
SOOTY adjective of the blackest black

Definitions from Open English WordNet, CC BY 4.0.

All of them: Word lists.