I have a 2002 Chevy impala the first problem I had was it was running hot so I changed the water pump, thermostat and I flush the radiator and it's still running hot I park the car and now it won't start and the battery is completely dead I charge it and it still won't start.

could be a blown head gasket. Do a compression test of the engine to find out first https://www.youtube.com/watch?v=ovvXnd7AhiU&t=66s

GM I can't do a compression test to the engine because the car won't start and it don't even turn over