Welcome @RodoggA
A similar question How do you connect open trivia api with mit app inventor - #6 by Dhruvil_patel discusses using an api about trivia. Is that the same api you are using? I do not know. The link provides some example code and advice about how to use the trivia api. The link may help you and already answer your questions,
In the meanwhile, why not follow Taifun's advice? Post an image of your Blocks and explain
What you do depends on how you want the app to work.