If this is your profile: https://www.wikitree.com/wiki/Speer-1136 you are a full member. Just login to your account and you'll see the link "[adopt this profile]" aside "No profile manager". Click on the link and you´ll become the PM.
As Rodney mentioned, you need to become a member of WikiTree before you can adopt the profile. For information on becoming a member, see this page on Volunteering.