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.
A list of words of search terms separated by a comma for SEO.
The tags are used to define the content of share messages for SEO purposes.
Header and Footer