Is there an upper age limit for emigrating to the United States?

Your mother can't apply for you until she gets a green card.

If she hasn't finished the marriage formalities by now,

Basically, when I started to apply for you, you were over 2 1 year old.

2 1 year is a threshold, and adults are over 2 1 year.

Then, if your mother applied for you at that time, applied for an adult unmarried child and had a green card (if you were married, it would not meet the requirements),

The schedule is about 8-9 years;

Or wait for your mother to be naturalized in the United States before applying for you. The time schedule is about 7 or 8 years.

If you get married, the schedule is about 10 year.