Cat help

I’m adopting a cat tomorrow due to it being killed if no one takes it, it’s the sweetest cat ever and I have the money for it and everything just not very sure what the cat needs more bc I have a dog. They said it is fixed and has rabbies shots but they didn’t know what else. What yearly shots if needed do I need to get for the cat? And also what should I get them checked for? He’s 3, I’m not sure if that matters