iPhone SE is locked to owner

If you are talking about "activation lock" (an anti-theft measure), AND if you cannot remember or don't know the old Apple ID & Password (even using these instructions:--> If you forgot your Apple ID email address or phone number - Apple Support or these:--> If you forgot your Apple ID password - Apple Support ) neither we, just users like you, nor Apple can help you, sorry, unless you are the original owner and you still have the proof of purchase (receipt/invoice reporting your device’s IMEI or Serial Number). Should be this case, start your request using this link: https://al-support.apple.com/#/additional-support

Shouldn’t be this case, activation lock can be removed only by the previous owner, with the credentials that were used to activate that iPhone/iPad. Without those credentials, that device is useless to you.

You can also take a look at this support article:--> How to removeActivation Lock- Apple Support

If you mean something different, please better specify your needs.

Regards

Giulio

Are you the original owner of this iPhone or did you purchase a used iPhone, which is locked to owner? If you bought a used iPhone locked to the owner, ONLY the previous owner of the phone can remove the activation lock. You cannot and Apple will not help you. If you can't reach the previous owner, you've bought yourself a useless device you can never use. Your options are:

1. Get the previous owner to remove the activation lock
2. If you can't find or reach them, try to get your money back
3. If you can't get your money back, recycle the phone responsibly and learn from this unfortunate buying decision
4. Read this --> The All Too Common SAD Reality of Buying … - Apple Community