Three routes in, roughly by difficulty
The simplest is a Custom HTML block in the block editor: paste the exported markup into a page and it renders. Good for landing pages and one-off pages, awkward for anything that needs to share a header and footer.
The middle route is a page builder. Elementor, Divi and similar all accept custom HTML widgets, so a generated section can be dropped into an existing builder layout.
The thorough route is a child theme with a custom page template — more work, but it gives you proper template reuse and keeps the design in version control rather than in the database.