MyBB Community Forums

Hello, how i can this same rank on my forum ?

I mean this text on grey field.




Thanks

This is a usergroup image, you can even use css to create a userimage as well.
First you will have to create a usergroup at
Admin Control Panel -> Users & Groups -> Groups -> <usergroup name>Create a New User Group
and set an image for that.
Read below docs about usergroups
https://docs.mybb.com/1.6/User-Groups/
https://docs.mybb.com/1.8/administration/user-titles/