what do u do next?

The water pump isn't circulating the engine coolant to remove excessive heat from inside. The thermostat regulates your engine temperature. A common cause of car overheating is a low-cost thermostat stuck closed, restricting coolant flow. Low engine coolant level.

If the car coolant is boiling, that means your car thermostat did not open to let the coolant go through, you have to replace it with a new thermostat to let your car coolant go through to enter the engine block cooling down the hot engine.

A common cause of car overheating is a low-cost thermostat stuck closed, restricting coolant flow.A blown head gasket can be the cause or the result of car overheating issues. Coolant can leak out, air gets sucked in, and the engine temperature needle wraps around to full hot. Plugged heater core.

if you have to drive an overheated engine, only drive it after the engine cools down. If the overheating problem is not recurrent, the problem might have been caused by factors such as driving during a hot day, leaving the air-conditioning on, or being stuck in traffic congestion.

Low oil level: If you still can't find the cause of overheating, check your oil dipstick. A vehicle that's low on oil tends to overheat because the oil removes from 75 to 80 percent of the "waste heat" in your engine (in addition to doing its other job of cushioning the moving engine parts).