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hi moustaphabayo,
currently, from the ui page, we can check a user or a group’s permission via site settings > site permissions under users and permissions > check permissions. however, it is impossible to list the detailed permission information like a user's permissions for all lists/libraries, sites/subsites in a site collection.
in addition, for possibly workaround, we would suggest you post the question in our windows powershell forum which is a specific support channel for office 365 powershell script related queries to check whether this can be achieved by powershell script in sharepoint online.
thanks for your understanding.
allan