In Plesk control panel, you can create a user account for website statistics by following these steps:

Go to "Password-Protected Directories".

Click on "/plesk-stat".

Click on the "Add User" icon.

Enter the details for the new statistics page user. By default, FTP users can also access statistics using their FTP credentials.

With the user you created, you can log in to the statistics page from the "Websites & Domains" section of the Plesk control panel.

Note: If your website does not have an SSL certificate, you will receive an error message. You can order an SSL certificate for your website from here.

Log in to the statistics page.

Note: After enabling an SSL certificate, the traffic will be redirected to an HTTPS connection. The statistics can be accessed at https://domain.com/plesk-stat/webstat-ssl/, where "domain.com" is your own domain.