It is quite easy, Just follow these Documentation and Guidelines
This one is most Important to Read-
https://support.fab.com/s/article/FAB-TECHNICAL-REQUIREMENTS
The most Important Sections are Project Organization and Minimum Content, At those Places majority of Products Fails.
Be Sure to have Single Root Folder in Content Folder, Fix all Redirectors, Disable Plugins (Especially Modeling Tools), Use Proper Naming Conventions, Use Proper Folder Assignment for every thing.
Then try to package your Product for Supported Platforms and lookout for any Errors and Warning (If any then fix those before Submission)
After everything is Done, you can then Delete (any Folders except Content and Config) Folder
zip that Project Files then Upload to you Hosting Site like Google Drive, One Drive, DropBox, etc.
Be sure to Provide Password in version notes if used any.
I think these Steps will Help you to get Listing Approved in one Go