Moved to Premiere Clip forum.
In the latest version of Premiere Pro, the option to Convert a Premiere Clip project moved to the File Menu, so create a new project, then select File > Convert Premiere Clip project. Check out this tutorial to learn more: Refine a Premiere Clip video in Premiere Pro. | Adobe Creative Cloud Mobile Apps Tutorials
Hope this helps!
This was an issue with Premiere Pro not with Clip. Put it back where it belongs.
Discovered that it wasn't the latest version on Premiere Pro as there is some issue with Adobe CC products not updating (greyed out update option), hence why the option to Convert Premiere Clip Project wasn't available.