It's super important to do it in a way that either a) prevents the Google account and/or IP address to be marked as a spammer or something, or b) can be done anonymously without a Google account.
There's no rush, so the process can be done slow enough to not trigger anything at YouTube/Google. It can e.g. be done in batches over some weeks, if that's necessary.
I'm not a great programmer, so the simpler/more automated, the better.
Any and all ideas are welcome. Thanks!
I think you can get the questions for a video without being logged in so I think that part is no problem.