This would probably be suited in
open topics but in either case, I don't know what you're trying to install, if it's a node.js project, php, or what. Usually with PHP there's an index.php file that would be use for accessing the site but you would usually also have to go through some sort of set up process via whatever install.php they have to configure database and what not. But we can't begin anywhere near to helping you out if we don't have enough details such as if you're using lunux or windows, the script you're trying to use, etc.