A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
Hi Jericho,
Generally, with full control permission for a site, we will be able to access the popularity trends for the site.
The permission page you provided before indicates you don't have Add and Customize Pages permission for the site, so I suggest the tips above to enable custom script.
However, to run the related command to enable custom script for the site, it requires to use SharePoint admin account or Office 365 global admin account. If you are not the admin, you may need to contact admin and enable it for you.
For your reference: Allow or prevent custom script
Please feel free to let us know if you are able to access popularity trends for the site after enabling custom script. We will help you do further troubleshooting.
Best Regards,
Tina