How many points is AMMO worth in Scrabble?

AMMO is worth 8 points in Scrabble.

Is AMMO a valid Scrabble word? Yes — 8 points

Yes, AMMO is a valid Scrabble word worth 8 points.

Yes, AMMO is a valid Words With Friends word worth 10 points.

AMMO is a valid Scrabble US/CAN word worth 8 points:

A₁M₃M₃O₁

AMMO is valid in Scrabble UK (World) —

A₁M₃M₃O₁

AMMO is a valid Words With Friends word worth 10 points:

A₁M₄M₄O₁

You can make 10 words from ammo according to the Scrabble US and Canada dictionary.