I think you just collected a reward from a comment or post. (It's a green big box)

You'll get it. Right now, you still have "Steem Dollars" and to vote more, you will need "Steem Power." The process is multi-stepped, but I do it from time to time.

Your posts will be paying out and you will get some at that time, also.

I can see your wallet, and you can see mine. It can help to look at someone else's transactions to see how it's done.