Hello Derick!
I’m afraid I don’t understand your question well…
If your question is, How to create a Portfolio page and add it to the top menu, please check the following guide from our knowledge base:
https://docs.theme-vision.com/article/setup-a-portfolio-page/
When the Portfolio page is created, simply navigate to Appearance->Menus and add it to your top menu
https://prnt.sc/sd17yi
Regards