Hello,

It is a big trouble dear and anyone can understand. That's why whenever you fill up any kind of form always check twice before submission.

Anyhow if there any correction option available go for it and try to correct your gender. If he correction option not show any gender correction option then you can call the helpline number of the examination website and call them. They will told you what to do otherwise you have to facing trouble in examination centre also the counselling. Try to solve this problem. You have to call the helpline number very first dear. Hopefully your problem will be solve quickly.

All the best.