There are following setups to install opencart on your webserver
upload folder contains all the files to host open-cart website needed to upload on server.
license.txt contains the license agreement and
readme.txt file contains current install and upgrade instructions.
The next setup to upload files on web-server. You can use the filezilla to upload the files.
Create database for you shop using cpanel . C panel provides an interface named
phpmyadmin to create database.
You have to rename the two files named
Final step is to run auto-installer. Open your browser and run your shop url, you can see the installation first page.