How to link html site template on Bootstrap 4 with admin panel?

Question

HTML

I want to figure out how to link a ready-made website html bootstrap 4 template (for example, an online store) with the admin panel

Answer 1

In fact, you need to pull the layout on the admin panel.
There should already be some reporting data in the admin panel. For example "Sold: 500 items in total", etc.
You need to throw in the layout (most likely there are already ready-made blocks) and insert your numbers into them, what's the trouble?
If possible, give a link to the template, I would like to take a look.