apple help without a phone

Sorry, there's nothing can be done when both iPhones are not working.

If you get those iPhones working, read here => Transfer data from your previous iOS device to your new iPhone, iPad, or iPod touch – Apple Support

Follow the instructions in this link to back up to iTunes—>How to back up your iPhone, iPad, and iPod touch - Apple Support

Make sure you have the latest version of iTunes, which you can download from https://apple.com/itunes. You will need Windows 7 or later, or almost any Mac made in the past 10 years.

Both of them need to be working. But what do you mean by “not working”?

Note that this is a user-to-user technical support forum, not a chat service. You get an answer when another user sees your post and thinks they can help. That can be minutes, hours or days after you post.

Does it turn on? If it does, back it up, then restore the backup to the new phone. But why isn’t the new phone turned on?

See the post from ckuan above. The blue text in that post is called a link; if you click on it a new page will open with further instructions.