German phrase
Wie viel darf ich ~?
Meaning
How much am I allowed to ___?
When to use it
It asks how much is allowed. Use it to ask permission about an amount or extent.
Example dialogue
Wie viel darf ich mitnehmen?
How much am I allowed to take with me?
So viel, wie auf einen Teller passt.
As much as fits on one plate.