disable issue

Keeping in mind that if you don't have a backup all data will be lost on that device (except those that you eventually synced to iCloud), pay attention to the specific gestures that you need to perform while connecting your iPhone to a computer (Windows 10 PC running the latest iTunes version) or Mac (which can have iTunes or Finder, depending on the macOS installed on it), and follow these instructions to re-gain access to your device:--> If you forgot the passcode on your iPhone, or your iPhone is disabled - Apple Support

or watch this support video about the same matter:

https://www.youtube.com/watch?v=7s8-zLG9ySQ

Regards

Giulio

If you cannot remember the passcode, you can restore it through iTunes

*Unless you have a backup, you will not be able to retrieve your data after this process*

To put your iPhone 6 in Recovery Mode in preparation for restore:

1. Power off your iPhone
2. Hold down your Home button while you connect it to your computer. Keep holding until you see the iTunes screen.

Now on your computer:

1. 1. Open Finder (on a Mac with macOS Catalina or later) or iTunes (on older macOS or on a Windows computer)
   2. You should automatically get a pop-up like this
   3. Click Restore, and Restore again, wait for the iPhone the boot back up to the Hello screen, then set it up again.

Good luck!