Run the ReSharper installer you have downloaded and follow the instructions in the installation wizard.
Review the ‘Available Products’ and select ‘Install' for the products you want to install. Note that the ReSharper license covers ReSharper and ReSharper C++ extensions, but if you need to use the other JetBrains .NET tools such as dotCover, dotTrace, dotMemory, or Rider, you’ll need to purchase a dotUltimate or All Products Pack license.
You will see the following when the installation is complete.
During the installation registration form will appear. It can be also opened afterward at Visual Studio (| Extensions) | ReSharper | Help | License information:
Select how you want to register ReSharper. Select a checkbox to pick the method you would like to use to register ReSharper