https://pathwaytoaus.com/services/visas/491
You can check this sa FAQ. Details about how to be PR from 491.
"The 491 is a five-year visa. This visa may allow you to apply for the permanent residence through the Subclass 191 β Permanent Residence (Skilled Regional). In order to apply for the permanent visa you will need to meet the following requirements:
You have lived, worked or studied in the designated regional area for at least three years, whilst holding a 491 visa, and
You can show earnings of at least $53,900 annually for three years. If you have a partner included in your 491 application, only one of you needs to show the three years of annual salary (through tax returns) at or above $53,900. Your partner can be the main applicant for the 191 visa if they can demonstrate meeting this requirement."