How do I remove the front panel to get at the drum to replace the belt on this unit?
Here are your parts
Replacement parts for WHIRLPOOL TEDS840JQ2 DRYER | AppliancePartsPros.com
This may help
YouTube - WHIRLPOOL DRYER REPAIR VIDEO 1
He has a whole series of videos.
Your unit may also have a couple screws (Under or at the font) holding the font panel on.
If it is not a match just Google in videos either “estate dryer repair” or “whirlpool dryer repair”.
While you are in there you may as well check all moving parts, the front drum supports and seals etc.
Also a good time to give the interior a good cleaning, including the blower wheel.
I would also check/clean the vent system.
Basically an overhaul.