Hi Chris,
You can not migrate from a WP backup zip file. You can set up locally the old site using the backup file. [Here](https://www.google.com/search?q=how+to+set+up+wp+backup+locally&oq=how+to+set+up+wp+backup+locally&aqs=chrome..69i57.13258j0j7&sourceid=chrome&ie=UTF-8) you can find info on how to do that. Or as a last option you can try: https://archive.org/