How long you have to wait may change. You will know the correct waiting time when you book time at the police.

 Police District or office Waiting time for an appointment
Agder Police District 4 to 6 weeks
Finnmark Police District 1 to 4 weeks 
Innlandet Police District  4 to 8 weeks 
Møre og Romsdal Police District 2 months
Nordland Police District 7 to 30 days 
Oslo Police District 25 days
Oslo, Service Centre for Foreign Workers (SUA) Oslo 42 days 
Southwestern Police District 6 to 8 weeks
Southwestern, Service Centre for Foreign Workers (SUA) Stavanger 20 days
Southeastern Police District 5 months
Troms Police District 1 to 6 weeks 
Trøndelag Police District 3 to 7 weeks 
Trøndelag, Service Centre for Foreign Workers (SUA) Trondheim 2 weeks
Western Police District 7 to 11 weeks
Western, Service Centre for Foreign Workers (SUA) Bergen 10 day 
Eastern Police District 1 to 10 weeks