V1rar

Based on common usage, v1.rar likely contains one of the following:

Use free software like 7-Zip or WinRAR . Based on common usage, v1

You need software to "unrar" (extract) the contents. Based on common usage

Right-click the v1.rar file and select "Extract Here" or "Extract to [Folder Name]" using the software you installed. Access: Open the new folder created to access the files. Based on common usage, v1