Before you can login, you will need to create a Service Account. In the tab, in the section, you can create a service account. For authenticating CLI calls, we need the following:

Additionally, you may need to add permissions to your Service Account to allow it to modify your projects. To do this, click on your Service Account and add a project role. From there, you can choose a project and permissions.

For more information on Service Accounts, refer to the Service Account Authentication documentation.

See how to Login Using a Command or Logging in With Environment Variables.