Hello I am a teenager am 16 high school student . I would like to start a business but I don't know what kind ? I want something easy and fun that won't affect my studies !

Dog walking
Babysitting
Snow shoveling
Weed pulling / gardening
Lawn cutting
Car washing / vacuuming

What sort of skills do you have? Like maybe mechanical, computer, musical, sewing, etc.

At 14 I started making money as a musician. At 17 I began my career as a piano tuner/technician.

How much time would you want to spend with your business at this point in your life?

Depending on how well you do in certain subjects, maybe you could make some money being a tutor for someone who is needing some extra help with school work?

The thing about work is that if it is easy and fun, is what is easy and fun for you. If you like pets, then some of the dog walking things.
If you are a computer web site designer, then that would be great.