Below a video, you can see a count of how many times it's been viewed. A video's view count is visible to anyone who can see the post. Note that you're not able to see the number of views for videos that you've shared as part of a
post with multiple photos and videos.
A video's view count doesn't include video loops, and a view is counted when a video is watched for 3 seconds or more.
Keep in mind that view counts will only show up on videos that were uploaded after November 19, 2015.