On Ubuntu for Raspberry Pi's Privacy Page you can request and collect all the privacy and GDPR related information that Ubuntu for Raspberry Pi is providing.
The privacy policy by is a legal document or statement that discloses how Ubuntu for Raspberry Pi gathers, uses, discloses, and manges their customers' data.
The basis for Canonical Ltd. sharing, adding, uploading, hosting, accessing or sending personal data out of Europe. Vendors can also add a description of their own impact assessment for data transfers.