' You will give or take a few minutes' is right?
A: When are you coming here?
B: I may be late a few minutes. You will give or take a few minutes.

' You will give or take a few minutes' is right?

Question

' You will give or take a few minutes' is right?
A: When are you coming here?
B: I may be late a few minutes. You will give or take a few minutes.

' You will give or take a few minutes' is right?

Answer

"I may be late by a few minutes"  "I will be there at nine give or take a few minutes" 
Maybe this is a better way to say it.

Answer

Give me a few minutes please

Answer

"I may be late by a few minutes, give or take"
I think this is right.
Hope this helps :)