Extract your script zip file which you've downloaded from CodeCanyon/Codester
For changing logo open \assets\images\ and replace logo.png & logo-black.png image file with your own
For changing favicon open \assets\images\ and replace favicon.jpg image file with your own
Upload the content of the
script.zip file on your web host.
The product can be uploaded either on a subdomain, domain or subfolder, depending on your needs.