Echoing what a lot of people said already, I thought the presentation and art in this one was top notch, good job! One thing I would recommend (and this might be gdevelop, i'm not sure how it handles text,) the text, especially the script font, is harder to read when it gets pixelated. Making sure it stays a vector object so it's clear at any size would make this a lot easier to read.
I understand the game is unfinished, and I think you did the right thing by submitting it because when it comes to game jams literally anything is better than nothing, so good job! However, I think it would be a good idea to note exactly what's unfinished about it on the itch page (like that it can't be beaten and what features are missing) because it would cut down on the confusion of reading the instructions and being completely stuck because the player can't tell if they're doing something wrong or not. But that being said I think this would be a great project to flesh out after the jam is over, and if you do I'd love to play the finished version!