Your debt will be sent to collections and you will be harassed pretty much for the rest of your life by phone and mail over that damn bill. Your credit score will go down. You will probably get a negative mark on your credit also which I believe takes 7 years to get rid off. Making it extremely hard to get a apartment, car or other little things that require credit checks. Please find some way to pay your bill my friend. You might not notice it in the months or early years ahead but trust me it will hit you when it hurts later.
Welcome to being a adult. It sucks lmao.