When water vapour condence, it forms a tiny dro of water that forms clouds. when do these droplets come down as rain?

As water evaporated, it rises up to the sky and condenses to form clouds. This is known as "condensation," which is one of the steps in the water cycle. Once the collected droplets become too heavy to remain in the sky, they fall back down to earth. This is known as "precipitation."

Maybe you should get some from your teacher and learn more so you can get your grades up and maybe study a bit more