Underweight and out of shape

I really need to get in shape and build some muscle bc I'm underweight and out of shape. I want to start running but my dad and boyfriend don't want me running by myself in our neighborhood since there are a bunch of white "rape" vans. I might be able to if I take our dog, Papi (picture below, he's a dogo Argentino) he needs to get in shape too bc his weight is shortening his life span and causing him to have growths. This is me

And this is Papi