This specific file, , is a "cracked" or pirated version of the Goodnotes 5 application for macOS. The notation in the filename indicates:

If you're having trouble with a specific feature in the official version, I can help you with: like PDFs or Word docs. Fixing sync issues between your devices. Customizing templates for planning or studying. What are you looking to accomplish with the app? Goodnotes | Notes Reimagined | Note-Taking App

If you are looking for Goodnotes, it is highly recommended to use the official channels to ensure you receive updates and security patches.