Unfortunately, there is no official python installer for win/arm64 devices yet. However, packages for python 3.9 and above are available in Nuget and also can be compiled from sources as well. Please see the instructions below.
Installers
Official installers for arm64 python 3.11 (currently at alpha) are available now on python.org.
https://www.python.org/downloads/release/python-3110a5/
For earlier releases, download from NuGet or build from the source. See below for instructions.
Download from NuGet
NuGet packages for python versions from 3.9 and above can be downloaded from NuGet.
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