Follow these simple steps to locate the URL of your claimed video
Open your web browser and navigate to YouTube Studio by clicking your profile picture and selecting "YouTube Studio" from the dropdown menu.
In the left sidebar of YouTube Studio, click on the "Content" option to see all your uploaded videos.
Locate the video that was claimed. You can use the search bar at the top of the videos container find it more quickly by filtering by copyright.
Click on the video title or thumbnail to open the video details. The URL on the right side is what you need to copy.
Tip: The URL should look something like: https://www.youtu.be/XXXXXXXXXX