German phrase
Wie viele ~ sind maximal erlaubt?
Meaning
What is the maximum number of ___ allowed?
When to use it
This asks for the upper limit. It is somewhat formal and suits forms or service desks.
Example dialogue
Wie viele Leistungspunkte pro Semester sind maximal erlaubt?
What is the maximum number of credits allowed per semester?
In der Regel sind 30 Leistungspunkte pro Semester erlaubt.
As a rule, 30 credits per semester are allowed.