When the temperature peaks and the coolant fluid starts to boil ? What's wrong

Yes The air does come on too cool down the car but the temperature gauge starts to go up or starts indicate high temp thus the coolant fluid starts to boil real bad

Get the RADIATOR FAN CIRCUIT diagnosed and verify to this point , that it has NOT overheated severely enough to cause a problem with the head gasket (or anything else). THEN, decide how to proceed with needed remedies.