I don’t think he means “scrape” as in “delete” I think he means “scrape” as in “collect all the data”.
Brute force way is to start from your profile: https://online-go.com/player/179/ and scrape the game history table by paging through it.
However, there’s almost certainly an API that will have the results on it - someone will likely be along to tell you about that soon.
(Wow, player #179, that’s old-time!!)