Hello! Does anyone know if there can be any way to connect parking sensors or rear camera to this type of infotainment 6V0035871D? I have a Fabia Mk3 estate without parking sensors... Thank you in advance!

I just used an aftermarket kit for parking sensors on my Mk1. Would be cheaper and has its own beeper box thing, eliminating the need to mess with the stereo.

parking sensors can be supplemented by rear as well as front, the radio can display it. but does not support the camera

Yes, it is possible, i have front and rear sensors and front and rear cam all in one aftermarket unit.