I kneaded some pizza dough and it turned out that I have done this double the amount I wanted to. This is my first time. Can I store this dough in fridge? And for how many days?
Yes, the colder the fridge, the longer you can keep the dough in the fridge. It will overrise after a day or two. Take it out of the fridge for an hour or two until it happily rises.
Pizza dough can also be frozen. I freeze mine immediately after finishing, and thaw it in the fridge for a day. Supposedly you can thaw it in the microwave.