@Abduazim Sobitov Welcome to Microsoft Q&A Forum, Thank you for posting your query here!
Adding more information to the above response!
If you need to provide only read only access for azure file share you can perform using Azure Active Directory
Firstly, Let me explain how RBAC works. in Azure File Share.
You can also use Azure Storage Explorer tool to generate a SAS key with limited permissions (Read/Write or more) for your file share and giving that to your users. Then having them use the SAS key to authenticate to your file share on their own copy of azure storage explorer. This will grant them read/write only access, without delete. Then having them Read/Write and inform you when they've completed the read/upload so you can manually force a sync (or wait 24 hours for the automated sync).
Please let us know if you have any further queries. I’m happy to assist you further.
Please do not forget to and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.