Simply login to your cPanel account and look for Softaculous icon or WordPress installer icon. You will find them under Auto Installers section.
Clicking on any of these icons will launch Softaculous auto-installer for WordPress. First you will see an overview of WordPress. You need to click on...
Attention: "role based name" email prefixes such as support, webmaster, info, contact, forum, service, affiliate, admin, traffic, partners, marketing, etc., for our member accounts are not permitted. They are acceptable for a vendor listing, but not for the member email. This is due to bulk email processors scrubbing them for delivery due to extremely high bounce rates. Please apply for membership using a personalized email prefix. Something like email@example.com.
If we discover you signed up with a role based name we will give you only one message to change it. After 3 days your account will be removed if the email is not changed.