Bindings are stored in each window’s InteractionController in a list of PropertyAdapters. These aren’t documented, so you won’t be able to get support on this, but you can introspect these property adapters to find the tag paths you need.
The SDK documentation will get you much of the way. Start with the JavaDoc for the window class FPMIWindow. Note its method getInteractionController(). With that, you can use the InteractionController’s methods to explore the bindings in the window. You’ll probably want to just get a specific component’s binding on a specific property, using getPropertyAdapter(). Note that PropertyAdapter is an interface, not a class – you’ll have to verify that the binding you are looking at actually references a tag. Or just wrap that part of your script in try: … except:
It's only been 2 hours since you posted your question, can you maybe wait a little longer in hopes that someone else can help you? If you don't hear back after a day or two, bump the thread. You can also contact IA support.
@Andrii.Randiuk a good place to start would be a new topic explaining what you're trying to accomplish and why. Maybe somebody can help you, and maybe it won't involve any kind of digging into undocumented internal APIs.