Currently, Facebook doesn't provide automated reporting for Facebook Stories, but you can still add these deliverables to your campaigns manually.
Here's how to add Facebook Stories to a report:
First, create a deliverable with the label "Facebook Stories":
Next, add the URL of the deliverable if you know it. If you don't add a deliverable URL, you'll have to choose a deliverable type here:
Then, expand the 'Preview & Edit' fields:
Now, you can add the metrics that you see in the Facebook insights dashboard and if necessary, add screenshots to the card:
