How Much Driving Will Recharge Drained Battery?

Head lights on for four days

I suspect that the battery is gone. That would kill most batteries and damage most of the rest.

Don’t try to drive it any more, as you may be damaging your charging system trying to charge the dead battery.

Time for a new battery, or at least buy a plug in battery charger and follow the instructions on the charger, but I doubt if it will do any good.