You can navigate to Settings -> Reading -> Blog Pages Show at Most to control the number of posts that show up on your archive pages.
In WordPress (and Genesis and your child theme), content archives are rarely seen as important parts of your website by search engines, primarily due to low content, which gets duplicated across pages. Loading too few means that you’ll create too many “useless” pages on your website, which can hurt your domain authority. Loading too many could slow down the page and be a bad user experience.
Typically, people won’t be browsing your archive pages. With a well designed website, visitors will land on exactly the page they’re looking for, and will navigate to related pages that you’ve linked to from within that page.
We recommend leaving the number of posts in the content archives at the default value, and focusing instead of interlinking your pages from within the posts themselves. A good practice is to reference a previous post you did that had some similarity – such as similar ingredients, or what you baked for that specific holiday the year prior.
Don’t forget to set up your navigation menu properly.