As of today, there is not a Logic App trigger for Azure File Storage, so I went with a schedule-based approach. Yes, this example leaves out a lot of fine-tuning, but it will get you headed in the right direction.

Create a blank Logic app
Trigger: Schedule
Action: Azure File Storage – List files
Action: SharePoint – Create file

After you add the SharePoint action, the Logic App should automatically add a For Each action and place the SharePoint Create File action inside of it.

In the last screenshot, I tested the Logic App by uploading a couple of documents in Azure Storage Explorer, then I manually ran the Logic App (click the Run button).

Again, this is a simple example. The example does not account for processing the same files over and over…