Puppy chipped tooth

Just noticed this and have a vet appointment scheduled for Wednesday. It doesn’t appear to be down to the pulp, does anyone with a similar experience know if this could possibly be saved?

My in laws dog I wanna help him but I only know so much

He’s only like 4-5 he was brought back from a shelter way before I was in the picture and he’s happy and somewhat healthy I’d have to think but his entire backside is almost bald and his tail is basically bald I’ve bathed him gave him flea medication cause he had them bad and rubbed lotion and oils on him and nothing has worked idk if I should start saving for a vet or what cause he’s a good dog a bit rowdy and untrained but I can do something about that just no clue about this

Update and more help needed

We eventually got him to the vet and after some tests he was diagnosed with lymphoma. We can’t afford chemotherapy at the moment so are exploring other options. I want to ask what alternatives that you all know about that we can use that’ll help him We just want to make him as comfortable as possible right now. I’m not asking for any financial assistance