help for a rescued Yorkie

Hi people! this is Billy Keli rescued him to try to help him, his former owner mistreated him and he is sick now. Keli took him to the vet he is with tartar on the teeth and pus on the gums, also with the ear with a fungus and inflammation Keli will have to pay for the surgery, anesthesia, medical exams, among others, as food because he cannot eat or sleep due to pain. Please... I ask you to help her... WITH ANY VALUE YOU CAN HELP,  ANY VALUE HELP KELI TO HELP BILY .... He wants to live and Keli will not give up on him. Keli Is 17 years old. I am Claudia just a friend that is trying to help them with this gofundme.com I will send you to see the situation of teeth from his ear.