If you want more font options besides the standard and the Google Fonts ones, you can easily add custom fonts from your own computer in the Visual Builder.

Simply go to any module that has text, open its settings and then go to the Design tab -> Font option, click on Upload and you should be able to select your custom font from your computer.
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Note: The Supported file formats are: ttf, otf. Sometimes you may see an error message called "Sorry, you are not allowed to upload this file type," which is due to WordPress, which forbids certain files to be uploaded, for security reasons. You can find a full list of permitted files here. You can follow the guide here to know how to resolve the issue: "Sorry, you are not allowed to upload this file type."