Before downloading and installing you should know if you want to install the Open Source or Commercial version of Qt for Application Development. I’m using the Commercial version for Startups/Small Business – read more about Qt’s offer here.
Go to your Qt Account – Downloads and select the Qt Online Installer.
Hint: Have downloaded Qt 5.15.13. Some of the screenshots are from previous releases. If nothing else changed, I haven’t done a new screenshot.

Select the latest Qt 5.15 – in my case: 5.15.13. This is a commercial Release, so you’ll see it only if having a commercial license. For Open Source Users: take your latest available release – which is 5.15.9 (released 2023-04-06)
I’m a single independent developer and there’s a special Qt License for Small Business / Startup – see more here.

If you’re not sure about the Version, it’s a good idea to select Product ‘Qt’ and Version, per ex. 5.15.13 and then download the Release Notes.
For macOS I downloaded the Unified Installer and got this:

Double click to install.
Log into your account:

Select the folder where to install:

It’s a good idea to use installation pathes without spaces.
As next select your components:

wait until the Installer has downloaded all.

I’m not automatically starting QtCreator – but this is up to you. I want to change the settings-path as first.

Go On and see HowTo prepare QtCreator.
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