Hello,
It’s the first time that I use Dato. I would like to know where can I put my GA tracker code or if their is a api/plugin that can help me to do this faster.
Thanks 
Hello @annas and welcome to the community!
The best way to go about linking your project with Google Analytics would be directly through the frontend:
That is, following the steps indicated in this page Redirecting... and adding the required meta-tags to your front end pages.
Since we can’t directly influence your pages through the CMS, only make content available through an API, we can’t integrate the service directly on the CMS, but you could, if you wanted to, add the google analytics tag on a meta tag field, to be queried and then rendered by your frontend.