Is there a way to get the battery verified?

If you see a message saying the battery in your iPhone is not an authentic Apple battery you likely don't have an authentic Apple battery in your phone. Did you replace the battery anywhere other than an Apple Store or Apple Authorized Service Provider? Did you purchase a used iPhone?

Only Apple or Apple Authorized Service Providers have access to genuine Apple parts.

If you got the battery replaced by ANYONE other than Apple or an Apple Authorized Service Provider, there's nothing you can get from Apple at this point. Apple won't touch a phone which has been tampered with by anyone else.

Your phone has already verified the battery you bought is not Authentic and unfortunately, you're stuck with it at this point. If you ever decide to sell this phone, you'll need to disclose it does not have an authentic battery in it. And Apple will not accept the phone for trade in the future.