Soufiane Hi Soufiane, the feature is described in this help article: https://together.bunq.com/d/45253-local-ibans
From the Home tab, you can add a new sub-account and then instead of creating a regular sub-account with a FR IBAN, you can choose to get a sub-account with an IBAN from another country. I would suggest to choose "Netherlands / Dutch" because that's where bunq's main headquarters are.
You might need to go through an additional verification flow to open this type of sub-account, but aside from that it's quick and easy and without extra costs if you use the Easy Money or Easy Green plan.