What power in reality does the Queen of England have?
I completely understand why you’re confused. Opinion on this can range from the Queen has near absolute power to the Queen is a pointless figure head. I think how people feel about the monarchy colours their opinion on this issue as well, therefore you will never get a truly unbiased answer. There is so much about the monarchy that people believe to be true because of tradition or popular myth as well, for instance people believe that the Queen must be politically neutral, that she can not vote-yet there isn’t a specific law that says anything like that, however even the official website of the British Monarchy mentions the Queen’s resolve to be politically neutral. The truth is that the Queen does indeed have massive powers, these are powers that are based in specific laws, powers that have not yet been restricted by any written law. She can dissolve parliament, she can sack a prime minister, she can break a treaty, she can declare war, etc. The only specific laws I know of that restr