Hi @Diana_F
Welcome to Google Cloud Community!
In your case, you may want to check this guide on how to delete or shut down a project.
If you are not able to delete the project, you may follow these steps:
- Access the services on the left side, select IAM & Admin
- Verify your account has the Organization Admin role or Owner.
- If you’re unable to delete a Folder, you can edit the roles assigned to your account and add the Folder Admin role.
- If you’re unable to delete a Project, you can add the Project Deleter role.
On the side note, kindly secure a backup of important data before you delete your project.
I hope this information is helpful.
If you need further assistance, you can always file a ticket on our support team.