Student visa? studying abroad? adult education?

Hi, im 21 years old and came from Philippines. am living with my family in Norway in 4 years. My problem is that I dont have HS Diploma. I go to a vocational school taking Caregiving, but I dont like my course. I was forced to study this course coz we know that it is easier to get a job, right? But hoensty i dont like this course. This was my wrong choice! And since i wanna study in US, my aunt told me that I can go to an Adult Education in California so I can get a HS Diploma. I dont really know what to do so I can apply for a Student Visa. Here in Norway, we are all supported by our government when we study abroad but not in my case.I have my aunts and her family waiting for me there and my family and her family will support me and everything. This month we will visit them in California and other states too. Should I apply for that school? I dont know what to do first. Hoping for your advices / suggestions. Thank u sooo much!!