By default, the platform does not have this option. You can use the following CSS code.
As a workaround, you may use the following CSS code. Please see the steps below:
1. Go to BuddyBoss > Theme Options
2. Under Custom Codes, enable CSS
3. Append the following:
#primary-navbar a { font-size: 18px; }
4. Save changes
You can share your idea to our roadmap page: https://www.buddyboss.com/roadmap > click on the +Submit idea button for a new feature suggestion for our development team to look at.