Hello Isa 2020,
Theank you for reaching out to the Wefugees community.
To receive a permanent residence permit (Niederlassungserlaubnis) you must have held a residence title for at least five years, have paid statutory pension insurance contributions for at least 60 months, have a secure livelihood, and be well integrated.
Here you can read informations, when you are a "skilled professional":
https://***.make-it-in-germany.***/en/visa/living-permanently-in-germany/settlement-permit/
I hope my answers were helpful and I would be very happy if you would contact me again with further questions. I'm a member of the mbeon-staff and I‘ll be glad to help you over a longer period of time. mbeon is an online advice for migrants via the mbeon app, which you can install on your smartphone for free. Download it from App Store or Google Play Store. You’ll find me in the mbeon-app under my location Mannheim and then my name "Frau Schünemann" and get confidential one-to-one advice in a safe virtual room where nobody can read messages. For Further information please visit ***.mbeon.de.
Best regards,
your mbeon advisor
manrhei-mbeon