How much weight will i lose if i don't eat or drink anything for two weeks?

Well I do know one thing you won't have to worry about how much weight you lose since you will be dead from dehydration. Does that answer your question?

You will die if you don't haveanything for 2 weeks

U'd die. You can survive for around a month depending on your physical condition without food. But you need water, and you need salts. You'd have to drink Gatorade and take all the required minerals and vitamins, because if you only drank water than you'd run out of salts, such as potassium and stuff. DON'T DO IT.