Hi there!
Thanks for reaching out.
Would you please explain your issue more? As far as I can understand your question, the category blog page is made with Joomla categories. So if you create a menu item as blog menu, then you have to select category blog types menu from the articles section there. It will give you a category blog page displayed on your site.
https://share.cleanshot.com/VygxjDW1
https://share.cleanshot.com/GYtsQZtZ
You will find some Blog settings in the Template Options too:
https://www.joomshaper.com/documentation/helix-framework/blog
Best Regards