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:
.bp-user-blog.single-post .entry-content p {
font-size: 20px !important;
}
4. Save changes.
Screenshots
Without Code

With Code
