Where to find it
Tap the arrow on the right side of the video, then Copy link. The short vm.tiktok.com version is fine.
One thing to check
Your TikTok has to be a public account. Private accounts block likes, views and follows from strangers.
What likes do for you
TikTok shows a new video to a small test audience first. How that audience reacts decides who sees it next. Likes that arrive while that test is running count for the most.