How many points is DUN worth in Scrabble?

DUN is worth 4 points in Scrabble.

Is DUN a valid Scrabble word?

Yes, DUN is a valid Scrabble word worth 4 points.

Yes, DUN is a valid Words With Friends word worth 6 points.

YES — DUN is a valid Scrabble word 4 points

Scrabble US/CAN: 4 pts | Words With Friends: 6 pts

DUN is a valid Scrabble US/CAN word worth 4 points:

D₂U₁N₁

DUN is valid in Scrabble UK (World) —

D₂U₁N₁

DUN is a valid Words With Friends word worth 6 points:

D₂U₂N₂

You can make 3 words from dun according to the Scrabble US and Canada dictionary.