At standard atmospheric pressure, the lowest temperature of water vapor is 100 degrees. If it continues to give off heat at 100 degrees, it will start to condense into liquid water. If it is above 100 degrees, it can be reached at any temperature.
The maximum temperature of water vapor can well exceed 384°C. For example, the superheated steam used in thermal power plants to produce electricity is around 800°C, because water vapor itself is a gas.
Real water vapor is colorless and transparent. The white water vapor we see is not water vapor. It is a water mist formed by the liquefaction of water vapor when it encounters cold. Steam burns are very serious. If you are slightly burned by hot water, they will turn red or you could get chickenpox.