If you did not download this file intentionally, be cautious. Compressed archives from unofficial sources can sometimes contain malware rather than actual game data.
In this context, the file name can be broken down as follows: sc21262-FH5Upd1455709.part2 (2).rar
The filename likely refers to a multi-part compressed archive containing an update for the racing game Forza Horizon 5 (FH5) . If you did not download this file intentionally, be cautious