It may be simple logic but it requires a lot of steps. It’s going to take you some time to code that. For someone who has a lot of experience with this, it would still take 30-60 minutes.
Here’s one example of how to parse JSON to get a specific property value:
Project link: Thunkable
Note that I am not using the Web API block here… I am just manually setting the JSON response from what you posted above.
·····················································································································
Need help? How to Ask Great Questions 
Debugging A Project API JSON Tutorial