I'm absolutely miserable highschool and desperately want to quit. What are my options? ?

Go to a charter school, you will build credits fast, the curriculum is generally easier, less homework. You need an education, get your GED. Life will be more miserable working a **** job that pays nothing and you’re struggling. There are reasons people come from all over the world to get a proper education. Do not let this opportunity past you, you are very lucky to have education as an option take advantage. 

I'm not from the US, I don't know the system there but do not quit! Plow it through somehow, ask some help in your school, a study partner, maybe become home-schooled, or part-time student, even if it takes more years, you should have at least a high school diploma.

As others said, without it your future is poverty and unemployment.

Also, later it is going to be way way harder to have some education.

The technology advances so quick, the jobs will be automated, nobody will need a no-skilled worker.

#my source-my life, when I'm going back to university at 44, so I can have a bit better life,

Graduate so you don't have to repeat a grade.

Sleeping in a cardboard box over a heating vent or being in jail.Do yourself a favor AND STAY IN SCHOOL AS LONG AS YOU ABSOLUTELY CAN.YOU WON'T REGRET IT,TRUST ME!!!

If you have diagnosed disabilities you have a social worker, therapist, someone who counsels you.  That's the person to ask.

don't do something impulsive that will affect your future severely.  There are other ways to get high school degree and one might work better for you.

Privat/charter school,  home schooling, GED program, -- That high school degree is the entry ticket to a lot of good options for your future.

Can you talk to a counselor?  Perhaps you are depressed/ anxious and there are helpful interventions for you.  Perhaps course load can be lightened for you..

Don't give up!

you have a choice , its called the unemployment line or the poverty line , your stupid .

I have an idea for you.

Check with your local junior college or city college and see if you can complete your GED through them.

I regret dropping out of high-school. Its only a few years you must strain to get good grades, than you move into doing or studying something you really love. Then you get into the work force. You have more opportunity in the labor force finishing your education than without. Any one can tell you this.

If you are suffering from unhappiness/depression there are medications you can be prescribed and doctors to assist you, all you need to do is reach out. There's behavior specialist all over the planet. They are there to help people thrive, get on their own cart, and ride in it, happily.If you think you are miserable now, just think of how much misery you'd be facing life as a homeless person, that no one wants to hire. Life requires effort, and it should feel good to succeed, rationally. 

If you think it's going to get better without an education you are wrong so whatever you have to do to suffer through high school is what you need to do. If you don't suffer now then you will just suffer even more later when you are struggling to pay the bills with a minimum wage job