Locked out of Iphone
How long does your iPhone stay locked up after your 11th wrong passcode attempt?
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The phone is permanently locked after the 10th failed log on attempt. You will need to reset / erase the phone at this point and then set it up again.
If your iPhone is running iOS 15.2 or higher........you can use the instructions linked just below:
How to reset your iPhone, iPad, or iPod touch when you forgot your passcode - Apple Support
If your iPhone is not running iOS 15.2 or higher........please use the instructions linked below, but note that you must use a PC or Mac.
If you forgot your iPhone passcode - Apple Support
If you have a backup of the phone, you can use the backup to restore the data on the phone during the new setup.