Fødselsnummer/Personummer

Hi ,how long it takes for you to wait to get your fødselsnummer or personal number? I received my residence card almost 3 weeks ago . I actually called the skat they said i was from Denmark before moving here in Norway ,i still have my CPR there so they ask now my CPR information.I have already reported my moved in the kommune in DK early this year before i get my residence permit approval here in Norway.Maybe i have some situation here.🥺🙏🏼