migrate library website from drupal 7 to drupal 9 with old content from the prev website

I have website built i drupal 7 and would like to keep the content and migrate to drupal 9. I need someone to help me with the project they even can be mentor to tell me how to do. The website is accessible via VPN and i already copied most of the files including dump of the database. I will just need to someone to tell me what to do