What happens when you order
You put your link in the box and press the button. The next screen opens with it already filled in. You choose how many likes you want, pay, and the order starts after that.
Where to find it
Tap Share under the video, then Copy link. youtu.be links and Shorts links are both fine.
Check this first
Only Public and Unlisted uploads can be reached. A Private video is locked to everyone except you.
Why order YouTube likes
The like count lives right under the player. To a new viewer, it's the fastest hint that the video is worth their time.