Google Takeout allows exporting your lists, but Starred list is not possible to extract. the only way is to scrape the google maps webpage.

I made a bookmarklet tool, and I am happy to share it with everyone:

https://github.com/irgipaulius/maps_scrape_bookmarklet

it will scrape the responses as you scroll through your list (works on all lists, including Starred), and you can either copy the JSON from the console, or export everything as CSV.

Readme.md should contain all instructions you may need.