How to Achieve Club Level 5
Club Level is also known as Club Prestige, it can be seen by clicking on the club stand in the inspector window that comes up.
It is increased by having more members levelling up. Every club has this, including Orb Club.
As an additional tip, you don’t need to have all five at level five simultaneously. So just recruit for one, when it reaches five, delete the club sign-up table and start recruiting for the second one.