Services like 23andMe and MyHeritage provide your raw genetic data as a zipped .txt file . You usually request this through your account settings and receive a download link via email.
If a browser tries to open the text file instead of downloading it: Problem with txt file not appearing when loading a family Download Family txt
If you are looking for a report on your family history or genetic data, these are typically downloaded from major genealogy platforms: Services like 23andMe and MyHeritage provide your raw