Log in to your cPanel, scroll to the APPLICATIONS section, and click on WordPress Toolkit.
Click on the blue Install WordPress button:
The WordPress installation screen will open. You do not need to change any settings, unless you want to change the WordPress admin username and/or password:
WordPress Toolkit will now download WordPress from wordpress.org, move the files to the correct location, create a database and database user and then secure your new WordPress installation. The "Installation Complete" message will appear. You can either install plugins now, or click on "No, thanks" to close the message box:
Your new installation of WordPress will now be displayed in the WordPress Toolkit dashboard:
All WordPress installations added using the WordPress Toolkit appear in WordPress Toolkit automatically; those installed manually need to be attached to WordPress Toolkit. If you have installed WordPress manually or with the old Softaculous Auto-Installer, we recommend that you attach all existing WordPress installations to WordPress Toolkit.
To attach WordPress installations to WordPress Toolkit, log in to your cpanel, scroll to the APPLICATIONS section, and click on WordPress Toolkit.
Locate the "Scan" button at the top and wait while WordPress Toolkit scans for your WordPress install.
The WordPress installation will now be attached to WordPress Toolkit and is now shown in the list of existing WordPress installations.
For Full Documentation, please read the official documentation here: WordPress Toolkit