2d platformer mobile game with Maths Quiz

Hi i need help for my project, im creating a mobile game for my project which is 2d platform game with multiple choice question. i alrdy design the 2d platform but i couldnt figure it out how to make pop up for the multiple questions , where the player move to the objective where the question will pop up in the game. Please help me for my project.

example like this video (

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do you have a tutorial or a source code on you make that?