There are multiple methods available for logging into your WHM Control Panel.
Step 1: If you possess a functional domain name, you can enter the URL [https://domain.com/whm] along with the login details provided in your Welcome Email.
Step 2: In case your DNS has not been configured yet, you can use the Server IP Address or
Serverhostname to access [https://Serverhostname:2087] or [https://ServerIPAddress:2087]