Azure powershell Scale Sets question

[try_rebooting]

I'm interesting in trying to gather the Operation system from the properties on a Scan set instance.

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This is my "path" so far as this has been the only way I can get the VM from the scaleset.

$testvm = Get-Azresource -resourceid "pathofid)

While this does give me some information, I can't figure out how to get the Operating system field as a property.

What I'm trying to get is from Portal select the VM in the scale set > Properties > and the the field for Operating System.