I close a project with CARTO on the website (no through coding) but I don't see where and how to write a title on the export map. It was possible with CartoDB but I didn't found solution with CARTO. I didn't found any solution but looks crazy that none didn't think to write a "header title" to the map.
As mentioned in the first Learn Guide, elements (title, text and images) are not temporary available in CARTO BUILDER. As a workaround, you can prepend a header to a custom legend.