Affiliate registration form will be shown up on your dashboard, there are two types of link: Affiliate link embedded on your domain (Embed link) and Link directing to Secomapp system (Direct link).
To public registration page on your shop menu, click and copy the Embed link on your shop (https://shopurl/pages/register-affiliate-account)
Visit Navigation on your Online store back-end:
Click to edit Main Menu
Add new menu item by inserting Name and paste the Affiliate link
Click Save to update your changes.