If your on a computer ....while at the site ... Check menu/ settings in the upper right corner of browser. Depending on what browser you use . there may be a copy link option there. If not you can highlight or select the address from the address bar..... Once selected you can right click ...and select copy.

Right click again and select paste ...to paste link.

Really need to know what device you are using ..phone ..pc .... And what browser ...etc.