Vittorio Hi! After you received your card, you can activate it in the bunq app. Open the card from the Home page, and tap "Activate" in the bottom. Then you'll be asked to set a pin code. You can choose it yourself, and you can always change it in the bunq app!
To enable contactless payments, you'll need to insert your card into a payment terminal (and enter your pin code) for the first time you're using your new card. After this, contactless payments will be enabled, and your card is now ready to use!
You can also add your card to Google Pay or Apple Pay and pay using your phone! Just open the card from the Home page in the bunq app and tap "Add to Google/Apple Pay". You can already add and use your card, you don't have to wait until the physical card arrives.
I hope that cleared things up!