If you are seeing a "Checksum Error" text for Part 2, it usually means that specific part was not downloaded correctly and needs to be re-downloaded.
You might be looking for the password required to extract the contents of that specific RAR file. jurassic-world-evolution-2-part2-rar
You usually do not need to do anything specific with "Part 2" text-wise. You simply right-click Part 1 and select "Extract Here." The extraction software (like WinRAR or 7-Zip) will automatically pull the data from Part 2 and subsequent parts to recreate the full game folder. If you are seeing a "Checksum Error" text
When a game like Jurassic World Evolution 2 is downloaded in parts (Part 1, Part 2, etc.), the computer treats them as a single continuous archive. You simply right-click Part 1 and select "Extract Here
You may simply want general text descriptions, patch notes, or content details specifically for the Jurassic World Evolution 2 sequel or its DLCs.
While this could be a request for help with a game installation, I am answering for the most likely case: that you are looking for regarding a multi-part archive for this game. Common Context for "Part 2" RAR Files