Hi,
You can remove the application by running the following command in PowerShell as administrator
Get-AppxPackage -Name Microsoft.GetHelp -AllUsers | Remove-AppxPackage -AllUsers
If this does not work, give a try to this command
Remove-AppxProvisionedPackage -Online -AllUsers -PackageName "Microsoft.GetHelp_10.2409.22951.0_neutral_~_8wekyb3d8bbwe"
The package name could be different on your machine so check that by running
Get-AppxProvisionedPackage -Online | Select-Object PackageName | Where-Object {$_ -match "GetHelp"}