Us Tourist Visa Duration
The US Tourist Visa (B-1/B-2) is a non-immigrant US Visa. Its validity period ranges from 1 month to 10 years and allows single, double or multiples entries to the US. The period of stay which is a maximum of 6 months is recorded by the Customs and Border Protection officer.
When you enter the U.S., a customs officer will give you authorization to stay in the U.S. for up to six months. If you'd like to stay for longer, you may be able to apply to extend this for up to one year.
B-1/B-2 Visitor Visa, Explained - Boundless Immigration
How often can I travel to the US on a tourist visa?
If you have a B1/B2 visa, you can visit the United States whenever you want to – as long as your passport is valid. The B visa is a multiple entry visa, which means you can use it to enter the United States more than once.
How Many Times Can You Enter the U.S. on a B1/B2 Visa? - Stilt