There is no age limit for applying for an F2 visa.
The F2 visa is a dependent visa for the family members of F-1 visa holders. This means that if your spouse or child is studying in the United States on an F-1 visa, you can apply for an F2 visa to join them.
The F2 visa allows you to live in the United States while your spouse or child is studying. You can work, study, or pursue other activities, but you must maintain your dependent status.
The F2 visa is a nonimmigrant visa, meaning that it does not allow you to become a permanent resident of the United States. However, you can apply for a change of status to another visa category, such as an H1B or L1 visa, if you meet the eligibility requirements.
To apply for an F2 visa, you will need to submit an application to the U.S. embassy or consulate in your home country. You will also need to provide supporting documentation, such as your marriage certificate or birth certificate, and proof of your spouse or child's F-1 student status.
The processing time for an F2 visa can vary depending on your location and the workload of the embassy or consulate. It is important to apply for the visa well in advance of your planned travel date.