Yep.
You don't.
Can you drive in Georgia with a Florida's learner permit with a 21 year old valid florida drivers license?
No
No they do not. Georgia does not have reciprocity with Florida
The state of Georgia will most likely issue an order for your arrest if it is not taken care of. You should call the Georgia Highway Patrol and they can direct you to the proper channels to deal with your situation.
The Georgia State patrol is always on I-85 in Gwinnett County ,GA They try to keep the Interstates safe and arrest drunk drivers, speeding drivers, or drug haulers.
Yes. No
You can only drive in the state where the learners permit was issued.
Yes. Otherwise your drivers license will normally be suspended and they can issue a warrant for your arrest.
Speeding
You have to be eighteen to get your drivers licence in Florida