If you have a backup of your website on your computer, use the 'Import Website' tool on cPanel and upload that archive. All the files will be restored to the public_html folder within a few minutes!
You can also extract this archive on your computer and then manually upload these files by File Manager or by using FileZilla FTP client.
If you do not have a backup, no worries, contact our support staff and we will check for your backup on our servers! :)