To check how your Facebook Instant Articles perform, check Social networks box in your Sources in Home report:
Instant Articles filter will appear below:
If this line did not appear, this means your IA pages are not added to the dashboard. To do this you should ask your IT team to help.
To set a task for them go to Documentation:
and choose Instant Articles tracking tab:
Don't worry, this integration will take them a few minutes :)
After they add a code Instant Articles traffic will appear in your dashboard automatically.