Note: The location of your root web directory in the filesystem on your web server will vary across hosting providers and operating systems. Check with your hosting provider or system administrator if you do not know where this is.https://developer.wordpress.org/advanced-administration/before-install/howto-install/#step-4-upload-the-files
this was already handled by an admin, or you did it at some point prior. wordpress requires a CGI proxy to function, like most PHP apps. not to say CGI proxies are impossible to configure, just that it's a skill in systems administration like any other when it comes to deploying a website
nginx, iis, apache would be the sorts of things you reach for here, along with php-fpm