It's all about educating yourself. I'm a college student currently making $5-10k a month online I spent over 4 years educating myself and I can finally say I mastered it. I was able to buy my first car, apartment and pay 65% of my tuition in cash.. Yes I said cash.
You can join any business in this world MCA, WUN, Infinity Downline, etc. But if you don't know how to drive traffic, get leads, and make sales you won't make a dime. I can help you.. My website is amberspayday.com once I see your email on my Downline I will contact you and work 1 on 1 with you.
As the other two people have said, and if you live in a locale that gets snow, I would set up a contract wherein you agree to shovel snow as soon as it falls instead of having to arrange it with the homeowner every time. You can do it by the inch, even.
First, it's spelled "dollars" and "too" much. If your dad wants you to come up with $500, I think he should help you find a way to earn it. When people suggest Internet stuff, just ignore it. You won't make money that way. Have a yard sale, babysit, walk dogs, mow lawns or help people keep their gardens neat, weeding, etc.
Sell something or go start a small business in your neighborhood. Go door-to-door and ask people if they'd like their car washed, lawn cut, dogs walked, whatever...