Fridgidare dryer model GLGQ2152ES3 runs but does not heat how do I get inside front or back to check the ignitor. It doesnt light (i think)

Ok, you can remove the small screws below the kick panel below the door on the front. that will gain you viewing space to watch and see if the ignitor is even glowing, if it is then you most likely need gas valve coils, or to turn on the gas.
if the ignitor is not glowing at all you will need to do some testing on the safetys and thermostats within the dryer. they are all closed at rest so you should have continuity through them. there is the operating stat on the air duct blower housing in the front of the dryer. there is also a hi limit that is on the rear housing of the unit that you will need to remove the top of the dryer to view and gain access to..
those dryers have been a pain and the rear hi limit is especially susceptible to poor venting practices so very common today, and the higher operating temps caused by the poor venting..
best of luck..