Beginning with iOS 13 you can connect a Bluetooth mouse or Bluetooth keyboard & mouse combo to your iPad. Here are the steps:
- Go to settings > Accessibility > AssistiveTouch > Devices > Bluetooth Devices
- Place your device in pairing mode and select it from the iPad menu.
- Go back to AssistiveTouch and turn it on.
You will now see a circle with a dot that you can control with your mouse.
The color of the circle can be modified for better viewing.
- To adjust it go to: Settings > Accessibility > AssistiveTouch > Pointer Style