I’m presuming when you say custom, you mean that you created that page? A static page would be ones you create through Pages > Add new in your admin dashboard.
On the contrary, a dynamic page are usually pages created automatically by WordPress. For instance, the Blog page and your default archive pages.
If you’re referring to something else, let us know.
2. in Dashboard > Pages -> Create a new Page.
3. in the editor add a GenerateBlocks -> Query Loop block.
3.1 In the loop blocks settings, select the Parameters you require eg. Taxononmy -> Category -> Term A.