By default, the platform does not have this option. You can use the following CSS code.
Please follow the steps below:
1. Go to BuddyBoss – Theme Options
2. Under Custom Codes, enable CSS
3. Append the following:
h4.bb-title {
font-size: 35px !important;
}
Change the pixel (px) size depending on your preference.
4. Save changes.
Screenshots
Without Code:
With code: