Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
If I want to know about any trophy e.g. What is XYZ trophy?, Why is XYZ trophy played? Which teams can participate on XYZ trophy? etc.
Are this type of questions on-topic?
Sure. With more effort, the following questions look on-topic to me:
Perhaps a tag for trophy could be used, and it may be useful to add the history tag.