There is no single "Project Management Template." Instead, a project lifecycle requires a of templates. Here are the essential templates you need, what they should contain, and how to structure them.
The Ghost in the Template
Confluence has pre-built templates called that are often better than starting from scratch. project management confluence template
If you have the "Automation for Confluence" app (or built-in automation in Cloud): There is no single "Project Management Template
The template consists of the following pages: what they should contain