What Scolosis? And is it bad? Im 14?

Well a few months ago I realized that my left shoulder wasnt even with my right shoulder so i warn my mom. A few days ago the doctor said that i might have scolosis so tomorrow im going to get some x-rays. Is scolisis bad? Plus i heard you have to wear these braces if you dont want to do surgery. I dont want my first day of high school to be terrible