How to install Filemaker on my iPad?
You can’t install software that’s not from the App Store except by compiling it yourself from source code (but you need a Mac to do that). And iPads can’t just run Mac software even if Apple would let you install it. They have different CPUs and a different operating system, and can only run software designed to run on iOS. There’s no iOS version of FileMaker (though there’s a client app available).