Does it have Wireless charging and what about qi? (Fire hd 8 8th gen)

There are 2 standards of Wireless Charging. Not to go into technical details, those are PowerMat and Qi. With the onset of Apple adopting Qi, this has now become the dominant standard, forcing Starbucks in the US to change from PowerMat to Qi.

No tablet has built in Qi charging (not even the top of the line Apple or Samsung), but if you have a case on the tablet, you can plug one of these in and sandwich it between the case and tablet. Then you would make the tablet have a 'make-shift' QI charge capability.

Plug the charge receiver in the USB port and sandwich it between the case with charge side facing away from the tablet (there are 2 different USB plug types for your tablet in that link, so choose the correct direction.

Then you need a Qi Charge pad itself, and you simply plug in the charger and line up the charger with that receive pad.