[No39] Uma Musume Pretty Derby - 10 [29322F27].mkv

What does this mean? ---> [29322F27]

https://en.wikipedia.org/wiki/Cyclic_redundancy_check
So if you have a corrupted file you can check to ensure the source is corrupted and not just your local copy.

So if I want to upload an anime where do I find those code?

You calculate it yourself with a script.
something like this https://pastebin.com/4tRgTsPQ

I have no idea on how to calculate it after I opened it. Can you show how to calculate it for beginner?

Look up how to run a python script online or something.

get 7zip then right click then find crc sha then crc-32