How do I remove Activation Lock from iPhone?

Did you purchase a used iPhone, which is locked to owner? If you did, you cannot unlock the phone and Apple won't unlock the phone. The only person who can is the owner who locked the phone. Do you know them? If you don't, you have a useless phone you simply cannot use. If you can return it to whoever you purchased it from for refund, do that. If you can't return it, recycle it responsibly. Read this if you bought a used iPhone --> The All Too Common SAD Reality of Buying … - Apple Community

eljean289 wrote:

i will go to the store? And return it back? How?

You’ll need to discuss this with the seller.

If the seller has disappeared, you’ve bought a brick.

We can’t help, and — absent proof of ownership, such as an original purchase receipt from Apple or an Apple-authorized reseller — Apple won’t help.

The All Too Common SAD Reality of Buyinga used iPad/iPhone - Apple Community

eljean289 wrote:

This is mine I bought it this brand new

A brand new phone does not come with an Activation Lock. Return it to the seller as they did not sell you a brand new phone.

Mac Jim ID is correct. No new phone would come Activation Locked. Return it to the seller.

eljean289 wrote:

i will go to the store? And return it back? How?

We don't know who you bought the phone from. Take this up with them. Clearly, you didn't buy the phone from Apple directly. This is between you and the seller.

Start here: How to Unlock an iPad or iPhone? - Apple Community