Puk number

PUK code is tied to the SIM card you use on your iPhone.

You cellular carrier should be able to give you your original PIN and/or PUK codes.

Regards

Giulio

See this Apple article: Use a SIM PIN for your iPhone or iPad

Use a SIM PIN for your iPhone or iPad - Apple Support

If you need a new PUK, you have to contact your carrier and ask for a new SIM card.

Regards

Giulio

Since you marked your answer as "best answer", nobody will help you any further, sorry.