If you've taken a DNA test with 23andMe or Ancestry.com and want to access your raw data, you can follow these steps:
For 23andMe: Log in to your 23andMe account, click on your name in the top right corner, select "Browse Raw Data," and then follow the prompts to download your raw data, 23andMe will ask you to sign a consent and then review the request before it sending it over to you.
For Ancestry.com: Log in to your Ancestry.com account, click on your name in the top right corner, select "Your DNA Results Summary," and then click on "Settings." From there, you can select "Download Raw DNA Data" and follow the prompts to download your data.
Keep in mind that the process may be slightly different depending on the version of the website or the platform you're using.