Adsense sends the PIN at home (to confirm payments) after a minimum threshold of about 10 euros earned in the account.
Here is the text of the message you will see in your account at the top right:
Congratulations! Your receipts have reached the verification threshold, so we have started the process of verifying your account. This way you will be ready to receive the first payment once you have accumulated revenue above the payment threshold.
To verify your account we will generate and automatically send you a personal identification number (PIN) for the address for the payments indicated in your account. Once you have received the PIN, you will need to enter the code at the bottom of this page. In the meantime, your account remains active and you can continue to post ads and earn revenue.SEGUICI SU INSTAGRAM!