I am 22 years old. I have a 2mm gap between central incisors with attached frenum. What are treatment options? (Photo)

Options vary on your desired outcome:
1. Laser frenectomy and ortho treatment. This is conservative and takes the longest treatment time. 
2. Laser frenectomy, whitening, and minimum/no prep veneers depending on the way your teeth come together. It looks like you also have other spaces between your teeth that need to be addressed. Maybe 4 veneers could work nice from the pictures you presented. Treatment 2-3 appointments.
Good Luck!
Dr. Marty W. Lindahl

Hi,
I would get a frenectomy and place 4-6 porcelain veneers. It looks like your teeth are very square and not symmetrical. Veneers will give you an immediate fix that will address the gaps, color and shape of your teeth. 
Another option is a frenectomy along with Invisalign or braces. This option takes longer and will not improve the color or shape of your teeth. 
Either way, seek experts who regularly do these procedures!
Dr. Kosdon