Hello Salmi,
Thank you for contacting us and for using XStore.
It is the All Departments menu element on your screenshot. To show all categories there, just go to Appearance > Menus > create or edit menu > add all categories and save – https://prnt.sc/9XObJmmNx-Ui , then go to Header Builder > All Departments > select the menu.
If you have any additional questions or concerns, please do not hesitate to reach out to us. Our support team is always available to assist you.
Kind Regards,
8theme team