The Phone Country Code field in Settings > Location Settings refers to the code or number which represents the international dialing code of the country you reside in.
For example, Australian clients would have the Phone Country Code set as 61, New Zealand clients would have it set as 64, and USA or Canadian clients would have the Phone Country Code set as 1.
If you are unsure of your country code, you can go to Google and enter in your country name, followed by the words 'dial code':
If you have any further questions, send then to us via the Submit a Request option in your Help & Support page.