When your hosting account was setup, your hosting provider or system administrator should have provided you with the address (URL) to your cPanel login page, as well as your username and password.
Typical Location of Login Page
Most web hosts are set up to use the following links (URLs) for their cPanel login page.
Domain is Pointed and Working
If your domain name is already pointed to your hosting account, you typically can access your cPanel at one of the following addresses:
example.com with your own domain name or your website's IP address.
cpanel shortcut is not setup, you can access cPanel via port
Domain is Not Pointed Yet
If your domain name is not pointed to your hosting account yet, you will need to use your website's IP address instead of your domain name.
192.0.2.42 with your own website's IP address.
Try using the port number if the above link does not work.
If these do not work, you will need to contact your hosting provider to get the proper link.