@Hugo Fernando Miranda Morin Copying or moving backup data from recovery services vault is not supported. There was a similar request raised - https://feedback.azure.com/forums/256299-site-recovery/suggestions/38022367-enable-download-sql-backup-from-recovery-services that you can comment on and up-vote.
Also, see the FAQ page - https://learn.microsoft.com/en-us/azure/backup/backup-azure-backup-faq#can-i-move-backup-data-to-another-vault
Backup item is just a notation, the real information is present in the recovery points, you can either restore as a DB or as a file. Restore as files might partially meet your requirement. That said, you can recover the data of certain recovery points to a storage account. Like Azure VM backup restore can be done to a storage account. Reference: https://learn.microsoft.com/en-us/azure/backup/backup-azure-arm-restore-vms#restore-options
Hope this clarifies. Please reach out to us if you have further questions in this matter.
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