MR Stray Cat needs help

Need some help... there’s a stray that’s comes by here. He’s been everywhere down this street, but something happened to him. He ended up here at my house. I thought he was dead at first because he didn’t stir when I opened the front door. Looking closer at him, I saw his ear leaking a lot of pus. I mean A LOT. My mother and I cleaned it up a bit but he looks pretty bad. I don’t have the means to take him to a vet as we live on a very strict budget. We’re doing what we can, seeing as how he won’t leave. We’re making him comfortable and feeding him. What am I asking for will go to his vet care. Whatever is left over I will donate for other pets. Thank you.