Thanks All!
I got it working. For those who are new, to show one or more custom profile fields to show in the members list for vb3, go to Admincp >vb Options > User Listing & Profile Viewing.
Make sure "Custom Fields" is checked. Save. Next go to Admincp > User Profile Fields > User Profiles Manager > and then edit the field(s) you want to show in Members List. Save.
That's it! Thanks again for help all