How many points is SIR worth in Scrabble?

SIR is worth 3 points in Scrabble.

Is SIR a valid Scrabble word?

Yes, SIR is a valid Scrabble word worth 3 points.

Yes, SIR is a valid Words With Friends word worth 3 points.

YES — SIR is a valid Scrabble word 3 points

Scrabble US/CAN: 3 pts | Words With Friends: 3 pts

SIR is a valid Scrabble US/CAN word worth 3 points:

S₁I₁R₁

SIR is valid in Scrabble UK (World) —

S₁I₁R₁

SIR is a valid Words With Friends word worth 3 points:

S₁I₁R₁

You can make 4 words from sir according to the Scrabble US and Canada dictionary.