Meta calculates earnings for Facebook and Instagram based on how many times a new video is created by their users that utilizes an artist's song (ie: Video Creation). Currently, they do not payout for views of videos in their platforms.
Further, Meta does not report the quantity of video creations for a specific sound recording if it had less than 100 video creations for a given month. However, per Meta's guidance, we are able to calculate and apply an average earning in those situations (so you will still be paid if even if you have less than 100 video creations for your song). In these situations, the quantity in your finalized reports for those rows will display "< 100".
Songs that had more than 100 video creations will display the specific quantity as provided by Meta.