SEO and tracking scripts are a very important aspect to a landing page. These will be pushed to the landing page meta data in Marketo. You can find more information to where the meta data can be edited here.
These settings are specific
Here is more information to where the meta data can be edited in Marketo.
To add or edit the SEO or tracking scripts, go to the Info tab > Advanced Settings.
From here you can add keywords, meta tags and custom html for the Header and Footer for tracking.
SEO
Keywords
A list of words of search terms separated by a comma for SEO.
Meta Tags
The tags are used to define the content of share messages for SEO purposes.
Tracking
Header and Footer
Custom HTML and Javascript can be added to the page for further customization.