Your work involves providing a service to a client. You can look into writing, graphics designing, social media management, video editing, copywriting, etc.
Suppose you want to start making money immediately. In that case, you should look into working at a local cafe, restaurant, or food chain.
Tutoring is an excellent way to make money as a teenager. You can either decide to teach school subjects like Maths or any skill like art, craft, baking, etc.
Your opinion counts, and this can be your chance to make money as a teen by simply answering questions on a survey form.
All you have to do is find a topic you are interested in, create a video or a vlog, and monetize your channel.