how to recover my the PUK iphone

You appear to be asking about two different things. If your phone is asking for the PUK code, you'll need to contact your carrier. Only they can help you.

If you're asking about the Activation Lock, you need the Apple ID and passcode to which the phone is locked. If the phone is yours and you've forgotten the passcode, start here:

https://iforgot.apple.com

If the phone is not yours, you'll need to get the information from the person to whom it belongs.

You need the Apple ID and password that was originally used when the phone was set up.

If this is a used device, you need to contact the previous owner to have them log out of iCloud or go to https://www.icloud.com/find/ My Phone and erase the device, then remove it from their account. If you can’t do that, the device is useless. Apple won't unlock it.

Turn off Activation Lock - Apple Support.     

If you are the original owner, contact Apple. Apple can remove the Activation Lock if provided the required paperwork. Either take the device, the original purchase receipt with the serial number, and a photo ID to the nearest Apple Store (if it has reopened)

Genius Bar Reservation and Apple Support Options - Apple.    

or contact Apple ID Support. 

 Apple ID - Official Apple Support.    

Contact Apple for help with Apple ID account security - Apple Support.  (Link doesn’t always load)   

Get Support      Work through the screens to get a chat option. 

Apple Support schedule phone call

https://twitter.com/AppleSupport       People have posted it may take an hour or more to get a response.

i can't unlock my iphone 5c. i can sign in my apple in PC but in my iphone it can't.

What happens when you try? Error message(s)? More information would help.

when i sign in to activation unlock this I.D cannot unlock this phone. but in my PC i can use my apple I.d