how to get previous Kmymoney release

You only can get the latest release using Windows stable release link.

Do anyone know how to download the previous releases?

Thanks

Sorry my question wasn’t clear.
I was looking for older 5.2 releases, something between 5.2-5096 I am using now and the latest release 5.2-5430.

Basically, you can’t. (I wonder if it’s possible using the Internet Archive?) This is essentially a side-effect of how those versions are created and made available. Whenever a new commit is made, KDE’s CI infrastructure attempts to compile a new version. If the build is successful, the new version becomes available for download. Previous versions are not retained once a new version is present.

More details on the subject can be found on this blog post.