The font is not just a decorative element on the site. In addition to the utilitarian function of the text rendering, it plays a very important aesthetic role, affecting all aspects of interaction with the user.
You have an opportunity to use Custom fonts within the Theme Options for the whole site and various modules of Visual Composer which provide an extensive arsenal of tools.
Use a great variety of the fonts which are available within the theme to highlight a special style of your site.
But in case the diversity of available standard and Google fonts in the theme is not enough for the needs of your site, you can upload any other font you like in Theme options > Custom fonts section.