I ran my dirtbike out of oil, made a clickin noise and quit. how much would it cost to fix or do i even need2?

I was riding my dirt bike (2006 crf 250r) and it made a clicking noise and shut off. I started it again and after a tough time it started again. It happened again (the clicking noise). i stopped and checked the oil, there wasn't a drip, it all leaked out of a hose connected to the engine and i need to know what happened. I need to know if i have to fix it or not and how much it would cost to fix it. (Im 15, im broke, no job, summer just started today, what do i do?????????)