To add a menu to your site, open the Block Library > Menu and choose the kind of menu you prefer. To change its settings, push the Content button.
Menu Items Settings
Menu items can be configured in two ways:

1. By entering menu items and links manually
Create an absolute link to the page, like this:

Or put in a relative link:

The addresses of individual pages are set in the settings of each page:
Do not enter an internal page address in the Tilda editor, for example:

This is because nobody else but you will be able to open this page. It just won't work on the menu.
2. By ticking pages in a list of pages

A list of pages consists of all the pages on your website. The menu is based on them. For example, a website consists of the main page and several internal pages.
When you tick pages in the menu block, page headings become menu items. By clicking on them, visitors to the website can move between pages.
Menu items in this case will coincide with page headings. If the heading is too long is not suitable to be a menu item, create a shorter heading in Page Settings.

Page Settings > Additional
The order of menu items will be similar to the order of pages on your site. To change it, just drag and drop pages to where you want them.

There is another way: enter page numbers manually. Go to Page Settings > Additional > Page number. Page numbering happens in tens these days: for example, the first page is marked as №10, second as №20 and so on.
How to create a menu for all pages
To create a menu for all the pages you have on your site, add a new Page, put a Menu Block there and configure it. Then go to Project Settings > More and designate this page as a Header. After that click on Publish All Pages.
How to navigate within one page using a menu
To create a menu for navigation within a single page, spell the corresponding Block ID in the links (the links should look like #rec2081259). Block ID can be found in Block Settings.
Made on