my phone iphone 6s plus locked on activation lock i have its box but i forget every thing ... how to open it plzzz help myy .... plzz help me apple ....

See if you can recover the ID/password.

Apple ID - How to find your Apple         An iCloud e-mail address is an Apple ID.

Apple ID - Find

Enter the Apple (iCloud) ID and click Forgot Password.

Apple ID - Manage

Apple ID – Forgot Password

If necessary, if you are the original owner, take the device, the original purchase receipt with the serial number, and a photo ID to the nearest Apple Store.

Genius Bar Reservation US

or contact Apple ID Support. They will need to see the original purchase receipt/paperwork also.

Apple ID Support

Apple ID Support (2) 

Apple Support by e-mail or chat         

Apple Support using Twitter

Or fill out and submit this form.

That's not activation lock. It's how every new, or properly erased iPhone or iPad starts up.

You also don't have a SIM installed. You're not going to get much of anywhere without one.