Musing.io is built on the Steem blockchain and it's because of this they appear in the same way any other vote would. Musing rewards both question and answer creators through upvotes, the amount which they provide will be based on the quality of your answer or question. 

In terms of checking if you've received any rewards, you can see this directly from musing. All you need to do is click on your profile and look at both your questions and answers and see how much value has been earned from upvotes. It shouldn't matter whether or not it's coming from musing.io, but if you wish to looker deeper into the votes you have received you could use a tool such as Steemd. Simply visit https://steemd.com/@mdeecoded or https://steemd.com/@<your-username> for any other user reading this. This site will show your activity and will also show who has voted for you. 

Remember, it shouldn't matter whether or not you receive a reward from musing.io, it's more important that your answer provides value if you can provide value to the reader the votes will come naturally.