Do more reading on how to make a static build of qt. please be aware that binaries you build are practically* only useable for yourself - you are not allowed to distribute the apps you build like that to other people unless you pay for a commercial Qt license.

*there are caveats, but I don't think there is much point in bringing them up here.

Do you REALLY want to know how to make a single-file executable, or do you just want to know how to make an 'installable program'?