Information about visitor visas and what type of visa a person needs to apply is available on the U.S. Department of State’s Visa Services web site:

https://travel.state.gov/content/travel/en/us-visas.html

After identifying what type of visa you need, please contact the Embassy Consular Section in your country.

We do not contact any embassy about your visa application. Please do not ask about it.

If you have already a U.S. visa, please check the expiration date to make sure that your visa will not expire before your planned travel date.
 
Thanks.