For development it is recommended to start at
Download Qt: Choose commercial or open source[
^] and go on. While it might be possible to just get the libraries and link your application with them you will find out sooner or later that something is missing and that you can't use all features without installing a full development environment. In such a case you would also have to do it all again and check for new and removed files when switching to a newer Qt version. That is probably why you did not found anything in the web.
For distributing applications see
Deploying Qt Applications | Qt 5.10[
^] and follow the platform specific links.