Help please - i think i have a serious mental illness - ( maybe 2nd post idk what happened to other)?

It sounds more like schizotypal personality disorder. Not quite schizophrenia though. Im not a doctor though. Go to your high school counselor. Tell him/her what youve told us. You can ask him/her to tell your parents because then theyll listen. Your counselor will give them references of therapists and will check back with you a few times or regularly to see that your parents are getting you help.