It’s unclear if “female orcs” exist in Middle Earth.
If the Lord of the Rings were written today, it’s guaranteed that there would be females of all races, and Tolkien’s writings would have progressed with them. But because it was written about sixty years ago, there is little indication in the text to say they are a part of Sauron’s forces. The only logic one can use to argue against their existence is that non-humanoid species didn’t make an appearance during the War of the Ring – but Men did. For this reason I think we cannot answer “yes” or “no.” However, no evidence for any female orcs being mentioned as existent has actually been discovered.