We can check deployment of WSP File from below PowerShell Script
# Connect to the Farm $SPfarm = [Microsoft.SharePoint.Administration.SPFarm]::get_Local() # What Solution are we looking for? $solution = "MyRequestShowNew.wsp"; # Get the solutions $currentSolution = $SPfarm.get_Solutions() | Where-Object { $_.DisplayName -eq $solution; } $currentSolution;