You can upload it via two methods. One is via FTP, I guess Dreamweaver has an inbuilt FTP client (You are gonna need enter in FTP server username, password as well as port which can be found in cPanel) which transfers files over to server. If you are not familiar with this go a head with downloading Filezilla Client
https://filezilla-project.org/ and go through documentation ( again here You are gonna need enter in FTP server username, password as well as port which can be found in cPanel). Another way is compress all files in a zip (or) rar folder and upload it via cpanel (i.e, File Manager --> Select desired directory --> Click Upload --> Select File --> After uploading it extract it). Hope i answered what you are looking for.