Where to find it
Hit Share under the video and choose Copy link. Watch links, reel links and fb.watch links all go through.
One thing to check
Set the post or profile to Public first. Anything limited to Friends is invisible to the accounts sending the engagement.
What views do for you
Facebook puts the view count on every reel and video in the feed. A clip with a healthy number looks like something worth stopping for, and that first stop is the hardest one to earn.