You might need to enable ‘expert settings’ in the vorpX desktop config app first to see this option in the game ‘delete menu’. Apply and close. On the first main settings page there should be a button for something like ‘more fullVR settings’, inside which should be the dominant eye setting.
In Call of the wild this will actually show the scope in only that dominant eye, which is kind of neat, as most games don’t bring the scopes that close to your face. It can feel a bit strange at first though. it helps to close one eye, like you would with a real scope.