I have 3 apple id's. How do I eliminate 2 of them?

If you no longer need to use the 2 Apple IDs, you can request to have them deleted. You must be aware that everything the Apple IDs contain, such as pictures, purchased movies, books, music and apps, as well as all content in their associated iCloud will be deleted.

You can see how to request to delete an Apple ID here:

How to delete your Apple ID account - Apple Support