The NServiceBus performance counters can be installed using the NServiceBus PowerShell tools.
Import-Module NServiceBus.PowerShell
Install-NServiceBusPerformanceCounters
To list the installed counters use
Get-Counter -ListSet NServiceBus | Select-Object -ExpandProperty Counter
Note
After installing the performance counters, all endpoints must be restarted in order to start collecting the new data.