Hi Cristina,
Currently Lifecycle Management only applies to Blobs. Below response says this feature will be considered during April 2024 planning cycle (tentatively).
LifeCycle Policies for Azure File Shares
https://feedback.azure.com/d365community/idea/c3e592a9-ee25-ec11-b6e6-000d3a4f06a4
Please click Accept Answer and upvote if the above was helpful.
Thanks.
-TP