Moisture detection when charging

I see this happen fairly often in my shop. You can try to clean out the port with a toothbrush and isopropyl alcohol. If that doesn't work, you'll need the port replaced. Luckily ifixit does have a guide and the parts available. If I were you, I would order an extra back glass panel just in case you crack the old one. Just make sure you order the correct one according to your model, otherwise you may have issues. And be careful with the wireless charging coil connector. I see that get damaged from time to time.

Samsung Galaxy Note10 ドーターボードの交換

If you don't feel comfortable repairing your own device, check with local repair shops. They should be able to handle it.