Right-click on and select "Extract Here." The software will automatically pull data from Part 06 and the other volumes to complete the extraction.
The text you've provided appears to be a filename for one part of a multi-volume archive (a .rar file) for . FIFA.21.Ultimate.Edition.part06.rar
This is part 6 of a multi-part split archive. All parts (e.g., part01 through the final part) must be downloaded and placed in the same folder to successfully extract the full game files. Quick Instructions: Ensure you have downloaded all parts of the archive. Install WinRAR or 7-Zip . Right-click on and select "Extract Here