Congrats on the eggs!
Ball python eggs should be kept at near 100% humidity so there will definitely be condensation forming on the top of the egg box unless you innovate something to draw moisture away (e.g. slanting the egg box to one side, or putting a layer of plastic wrap on the top to wick the moisture away).
A few drops of water dripping on the eggs should not be a big deal. If you find a lot of moisture condensation then it could be an issue with the air temperature variation between the egg box and the incubator itself: which could be caused by a variety of factors (e.g. checking the eggs frequently/inadvertently adding different temperature air before closing it up again and/or a shaky on/off thermostat on your heat source).
Note: Anything that has not been bleached and handled in sterile conditions is more than likely carrying mold spores. I would not touch the eggs even to wipe them down because you may be contaminating them. Most likely if they made it 40 days without mold then they should be fine for a few more weeks.
Any error in your technique will usually show up in the last week of hatching where the eggs fail to hatch and start to deteriorate. Hopefully all hatch, but, sometimes it is beyond your control.
Best of luck!