Thanks for the reply!
Here is the link to my app: https://studio.code.org/projects/applab/suAp4 (although the actual app is in Norwegian so I'll just explain it).
I'm wanting to do this feature on the screen named "Spørsmål5" as well as "Spørsmål9". For number 5, I'd like to have the screen on for 15 seconds and automatically change to "Spørsmål6" after.
For number 9, there is a little game where you have to click the face as many times as you can in 10 seconds. There is no limit to how many times you have to click. So what I want for this one, is for it to change to screen "Ssiste(Vinner)" after 10 seconds.
I tried making a variable for screen and increasing it by 1 for each screen, so that by the time the variable was worth for example 5, I could just use an "If var screen = 5: setTimeout" but that didn't work unfortunately. .