Your question is somewhat a little hard to understand as it is incomplete. So I'm going to answer the way I understand what you asked.
Musing.io is like any other Q&A site where you can ask a question and someone will answer it.. Yes it will let you ask questions and you can answer our questions. But the exceptional aspect of musing is that you will get rewarded with tokens if you ask a valuable question or a very well optimized answer. You can exchange those tokens for money.
Why and how you get rewarded? If you are using musing then you allready know.. Musing is a dapp based on steem blockchain similar to any steem frontend but the purpose is rather well defined and limited.
Hope I covered whatever you wanted to ask..