On computer
1.Open the YouTube channel whose link you’d like to copy(here I’ve taken Pib India as an example)
2.Now click once on the URL of the chrome page so that your channel link would be selected.
3.Now right click on your mouse,as you can see on the image above there are multiple options,click on copy and your channel URL will be copied.
4.Now tap and hold the place where you want to copy the link and simply click on paste or you can just use control+V .
On mobile
1.Open the YouTube app
2.Search the channel whose link you’d like to copy (here I’ve taken Pib India as an example)
3.Now click on the three dots you can see right behind the channel as shown below
4.As you can clearly see the share option when you click on the three dots,now when you again click on the share option you’ll get the following options
5.Simply select the ‘copy link’ option as shown in the image above and paste it wherever you want.