Please be specific.
Is it for Prepaid or Postpaid?
You still have the SIM bed, then you will be able to retrieve your PUK code. But if not, you need to visit the nearest Globe Store and ask for SIM Card replacement. You may insist to have the same mobile number for free.
As long as you are the account holder. Simply contact globe at Contact Us and they will provide you your PUK code.