By default, the platform does not have this option. You can use the following CSS code to hide the Profile Navigation on their Lessons.
Please follow the steps below:
1. Go to BuddyBoss > Theme Options
2. Under Custom Codes, enable CSS
3. Append the following:
.bb-lms-header .learndash_next_prev_link {
display: none !important;
}
4. Save changes