Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Bujji!
It is very hard to see the wound, but in the last picture it looks more like a mass involving his left foot. He should be using an E-collar to prevent licking and be kept indoors to prevent flies from landing on the wound resulting in maggots. Bujji needs to be seen by a Vet to see if that is a mass on the foot or if the foot is broken. The only thing I can recommend is the above plus cleaning the wound twice daily with water and soap and applying mupirocin ointment after each cleaning. He needs oral antibiotics and pain medications. We can not prescribe medications legally because the law requires a valid Veterinary Client Patient Relationship. In order to have that we need to be able to examine him in person.