If you have no prior work experience, you'll have to start at the bottom. There's nothing wrong with that.
Don't be afraid of stocking shelves, cleaning, flipping hamburgers, or any other entry-level, unskilled work. These are all fine things to start off in.
Working in an entry-level job will not lock you into a career path. On the other hand, continuing to have no job will lock you into a path where you have very few options. So you should prioritize just getting a job initially, without worrying about what it is too much.
Once you have some experience, it will be much easier to move into a more interesting, fulfillling job later. And, you will have a better idea of what you want.
Whatever job you get, make the most of it: take it seriously and do an excellent job.
This will help you get the most out of your job and build the right sort of habits going forward. It's easy to say "this is a worthless job, so I'm going to treat it like it's worthless". Lots of people take this attitude, slacking off, quitting as soon as they get bored, etc. But this is not a path to success; instead, it is a great way to always be stuck at the bottom.
If you have never worked a day in your life, work is probably going to be challenging at first. It will help if you commit yourself ahead of time to try to do your best and really stick with it.
Having worked a variety of jobs, from the top to the bottom, I would say that practically no job is fun; work is still work, even if you are working on something that greatly interests you. And any job can be fulfilling if you do it well. The most important thing will be your attitude.