Navigate to your YouTube channel's YouTube Studio - Click Here if you need help with this
Retrieve the URL for your video:
Click on the three vertical dots to the right of the video
Click on the "Get Sharable Link" to copy the URL
Navigate to the place in Moodle where you need to place the link:
paste the URL in the text box.
select the text you just inserted, click on the chain link icon, and paste your url.