This tutorial demonstrate on how to assign AutoSSL for your domain name in cPanel
1. Login to cPanel
2. Search for SSL/TLS Status
3. Select SSL/TLS Status and from the page you will see the Run AutoSSL.
To assign AutoSSL for your domain may click on Run AutoSSL and once cPanel validate your SSL will be active in green color lock same as below screenshot.
4. Then can go to browser to verify your domain do have a valid SSL assign and it will have Lock on search bar as per screenshot.