Whats happening here?,Why is this not working?

So i was getting my unity license when i got this message next to an error saying: Install failed: permission denied, mkdir ‘/Applications/Unity’ I looked at some other forums but they didn’t help at all. What do i do here?

I have the same Issue. I have loaded it on two computers and created a second account just in case. Still cannot get it to let me pass. I guess I will have to continue using Blender.