My phone says security lockout,what do I need to do?

To unlock your iPhone, follow the steps described in the Apple article:

(< iOS 15.2) -> If you forgot your iPhone passcode

If you forgot your iPhone passcode - Apple Support

• If you don't have a computer and you can't borrow one, you need to go to an Apple Retail Store or Apple Authorized Service Provider for help.

(iOS 15.2 and newer) you don’t need to have a computer -> If you see an iPhone or iPad unavailable message or Security Lockout screen

If you see an iPhone or iPad unavailable message or Security Lockout screen - Apple Support

If u remember your apple id and password and find my iphone is off,you can restore your device

Restore your iPhone, iPad, or iPod to factory settings - Apple Support

or wait time to unlock security lock out

There are links to at least 4 Apple Support documents in the answers above your post.

If you have forgotten your passcode, start with this one: If you forgot your iPhone passcode - Apple Support

I need my phone unlocked