Found sick kitty need help

I found a sick kitty a few days ago and fed it and cleaned it best I could. Called ACPS to come get it thinking they will treat it then adopt it out to someone. But the brought it back. And I don't have the money at all sadly to take care of this kitty as I already have 2. Does anyone know anyone in Jacksonville Florida who has knowledge and experience caring for and fostering sick cats? This kitty is the most absolute sweetest little thing please if anyone can help I'd appreciate it so much. If I kept it unfortunately it'd be an outside cat and the chances of survival in my neighbors for outdoor cats is poor. Just please any help would be great