Your Profile Strength is a measure of how strong your profile is with 1iota.com. Strong profiles have done things like connected their social media, confirmed their email address, uploaded a photo, and completed their casting profile.
There are bullet points next to your profile strength in your 1iota profile that tell you what else you can do to increase your profile strength.
The three categories of your Profile Strength are: Rookie, Veteran, and All Star.