Navigate to Clouds > <your public cloud> > Regions to see your inventory for a selected region.

You can filter the regions by your public cloud account. Each region has VPCs/VNets and instances. If you have deployed any PCGs, you can see them here as Gateways with an indicator for the PCG's health.

If you do not have any VPCs/VNets in a public cloud region, that region is not displayed in CSM.