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

Best option for your case is space closure by aligners and after that frenectomy to prevent relapse. Go for bonded permanent retainer.

Laser frenectomy and porcelain Veneers will transform your smile beautifully.  When designing the veneers it will be important to compensate for the spaces by preparing the teeth properly.  I don't think you can achieve a natural result with no prep or minimal prep veneers.  Go for it! you will be happy with the result!

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