How am I supposed to get a job when I cant even talk to other people

How am I supposed to get a job when I cant even talk to other people I am coming to that age now where I have to set out and do my own thing...to most people, I am probably well over that age. I see people that were younger than me in high school already have college degrees and high paying jobs...I have been lost for so long. The problem is, I am scared of the world. I cannot talk to anyone, even family, without locking up completely. I have even passed out before, due to how nervous, tense, and scared I become. When I become like this, I even stop breathing. Just did it for too long one day and ended up knocking myself out. I cannot get any words out, so my communication is pretty much useless. I cant even say "hello" or "hi" to answer a phone. How do I get a job if it is literally impossible for me to do anything involving communication with other people? I started writing literally everything down at one point to communicate, but it was not a viable option. It made conversations nearly impossible to follow with another person. They would either give up, or just kind of get bored of waiting for me to write everything down. I dont want to sound like I am making excuses for myself, but I am physically and metally at the point where I cannot do anything that involves communication, in fear of my own safety and mental health. What do I even do?