Thanks to the fact that I migrated from Evernote to Joplin all my notes are now stored in Dropbox as Markdown files.
This allowed me to quickly create a dumb script to extract my scores for each item I reviewed over the years, and put them in a table.
Now it’s all available here on Reviews page.
Maybe I’ll add the actual mini-reviews as well some day, it’s just that it will require more effort from me to proof-read and clean them up.