to use when to switch to rules slide you have to press right arrow key and to start the quiz press the START button it only shows on the rules slide rest is explained in the project ( warning - questions after Q1 can be difficult)(there are not)
I hope everybody will like this project and take a step to save the Enviorment to learn how to do so please check out this other project by me- https://scratch.mit.edu/projects/873672081