RAR files are compressed archives. You need specialized software to open them.
Right-click the TJT.rar file and select "Extract Here" or "Extract to [Folder Name]" using your installed software. TJT.rar
Once extracted, check for the following files to understand what it is: RAR files are compressed archives
Only extract files from trusted sources to avoid malware. If you can provide more context, I can help you further: Where did you download this file from? TJT.rar