Is that possible to design a tab in userform for selecting a face in the object just like this?
Check this: solidworks-api-examples/swex/add-in/form-selection-box/FormSelectionBox at master · codestackdev/solidworks-api-examples…
Do you have example in VBA?
No, sorry, this would be quite an overkill, although it is possible to do. Have you considered Property Manager Pages instead of User Forms?
Check this: solidworks-api-examples/swex/add-in/form-selection-box/FormSelectionBox at master · codestackdev/solidworks-api-examples…