Is it possible to install Tor Browser on iPad?
If I am understanding you correctly you are trying to download the macOS version of TorBrowser on your iPad?

If that is correct, that will never work. The only place to download/install/buy applications for iOS devices is the App Store which is itself an app on your iPad.

If you want a good Tor Browser on your iPad I use one called "Onion Browser" that seems to do the trick. Just search the App Store for that name and it will pop up. There are likely others that will doo a decent job too, but that is a good place to start.