According to the official documentation:
When a new Apps Script project is created, a default GCP project is
also created behind the scenes. This GCP project is hidden, meaning
most users aren't able to directly locate, view, or update the project
in the Google Cloud Platform Console. However, admins and domain users
that have the resourcemanager.projects.list permission on the
parenting GCP folder are able to view and configure default projects.
My interpretation on this is that you can't locate, view or update the GCP project unless you have resourcemanager.projects.list
permission on the parenting GCP folder are able to view and configure default projects.
The solution would be to contact the administrator to further help you on this issue.
Here you may find the list of GCP projects that you have access to modify, delete or view:
https://console.cloud.google.com/cloud-resource-manager
Since you don't have access to the organization directory which contains your GCP projects, you might be seeing this message:
Related article:
Google Cloud Console Quotas You don't have permissions to perform the action on the selected resource