Let's say that someone rolled out Azure Arc for server agents, but they forgot to tag these resources. So if you aren't tagging your resources today, I encourage you to do that.
I posted a simple code example on my Github about tagging Azure Arc resources. In this script, I'm using two different PowerShell modules:
If you have both of these modules, you can query your Azure Arc-connected servers and tag them using the New-AzTag cmdlet.
Get the script from here - AzureArc/Set-AzureArcConnectedMachineTags.ps1 at main · Kaidja/AzureArc (github.com)