Hi John,
Thanks for contacting Builder Support. I hope you’re doing well.
We currently offer a limited selection of Google Fonts in Builder, but not all of them. So, either you can add/upload the font using this article or by using the Google Fonts API.
Note: Any fonts already installed in your Shopify theme or site’s CSS automatically work with Builder and Builder Theme Studio–you do not need to add them separately.
If you still have any concerns or questions, please do reach out to us. Thank you