Hey mate. At this stage, there is no science (except DNA testing and it is payable) which will tell you if it is male or female. But having said that their is a "Bro Science" method, that i learned from an experienced grower on youtube. Males tend to have a stronger, higher and completely straight (like a barrel of a gun) main stem --------, females have more winding (curved) main stem // and they are usually "weaker" looking then males (smaller). Does it work? Mostly yes, at least from what i have seen, but it is not 100% reliable method. On the photo it looks like it is curved stem... If you want you can take a look at the original video i am talking about:
www.youtube.com/watch . And here you have a video on how to actually identify plant when it is maturing:
www.youtube.com/watch . I hope this helps! 👊