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.

Note: Any modifications are considered as custom work already. Know more about our Support policy here: https://www.buddyboss.com/support-policy/

Screenshots

Without Code

https://prnt.sc/NeTATga_9jeJ

With Code

https://prnt.sc/6DLSzM5Uqt9n