1.Download Unity Hub from Unity website: LINK
2.Install Unity Hub and create your own Unity ID (you can sign in with your google account). Open Unity Hub, go to Installs tab and click on ADD button.
3.Choose the latest Official Release and click NEXT
4.Tick the option to install the Visual Studio along with the Unity
5.Agree with the licence and click DONE. Unity will be installed. At the end, once we open the Unity and the Visual studio we will have to sign in to the Visual Studio as well to get a free licence.