You can make use of the Import functionality in Bitbucket Cloud in order to migrate repos from Azure DevOps. If there are multiple repos, they need to be imported one by one, I'm afraid it's not possible to do a bulk import.
The import will migrate the Git repository only (with all the code and commit history), metadata like pull requests, permissions, etc are not migrated.
I found the following article which has step by step instructions on how you can do an import:
Did you have any specific questions about the migration that you need help with?
Hi @Osvaldo Guerra Lopez , I have replied to the separate question you created about this here: https://community.atlassian.com/t5/Bitbucket-questions/I-imported-a-project-to-Bitbucket-from-Azure-DevOps-how-can-I/qaq-p/1600955
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