To get a student visa for the United States, you will need to follow these steps:

1. Find a school: First, you will need to find a school that you would like to attend in the United States. You can search for schools online or contact the U.S. embassy or consulate in your country for a list of schools that are approved for student visas.
2. Apply to the school: Once you have found a school that you would like to attend, you will need to apply for admission. Each school has its own application process, so you will need to follow the instructions provided by the school.
3. Get a student visa: If you are accepted to the school, the next step is to apply for a student visa. To do this, you will need to complete the online visa application form (Form DS-160) and pay the visa application fee. You will also need to provide documentation, such as proof of financial support and a passport, as part of your application.
4. Schedule an interview: After you have completed the visa application, you will need to schedule an interview at the U.S. embassy or consulate in your home country. You will need to bring your passport and other documents, such as your acceptance letter from the school and any financial documentation, to the interview.
5. Attend the interview: At the interview, a consular officer will review your application and ask you questions about your background and your plans for studying in the United States. If the officer determines that you are eligible for a student visa, they will issue the visa to you.

It is important to note that the process for getting a student visa can be lengthy, so you should start the process as early as possible. You should also be prepared to provide detailed information about your education, financial resources, and plans for studying in the United States.

If you fail your first visa interview, you may be able to reapply for a visa. However, the specific circumstances of your case and the reasons for your visa denial will determine whether you are eligible to reapply.

If your visa application was denied because of a technical issue, such as an incomplete application or a missing document, you may be able to reapply by correcting the issue and providing the required information. In this case, you will typically be able to reapply without having to pay the visa application fee again.

If your visa application was denied because of more serious issues, such as a lack of strong ties to your home country or a lack of financial resources, you may have to address these issues before you can reapply. This could involve providing additional documentation or demonstrating that you have taken steps to address the issues that led to your visa denial.

It is important to note that the visa application process can be complex and that each case is unique. If you are denied a visa, you should carefully review the reasons for the denial and consider seeking the advice of an immigration lawyer or other qualified professional before reapplying.