Hi @luanvanviet and welcome

there's really no difference to any other App made for MacOS

But take a look at this blog post:
https://blog.qt.io/blog/2012/04/03/how-to-publish-qt-applications-in-the-mac-app-store-2/

And you can also take a look at this threads, they have some helpful insights to the Qt aspect of it as well:
https://forum.qt.io/topic/90173/publish-to-mac-osx-app-store
https://forum.qt.io/topic/94844/deploy-to-osx-appstore