Determine your eligibility: There are several ways to qualify for a green card. The most common include employment sponsorship, family sponsorship, refugee or asylum status, or through the Diversity Visa Lottery.
File a petition: Depending on your eligibility category, you or someone else will need to file a petition on your behalf. For example, if you're applying through employment, your employer will likely file a petition for you.
Wait for approval: Once your petition is approved, you will need to wait for an immigrant visa number to become available. The wait time varies depending on your category and country of origin.
File Form I-000: If you're already in the United States, you can file Form I-000 to adjust your status to that of a lawful permanent resident. If you're outside the United States, you will need to go through consular processing.
Attend an interview: You will be required to attend an interview where a USCIS officer will ask you questions about your application and eligibility.
Wait for a decision: After the interview, you'll have to wait for a decision on your application.
Receive your green card: If your application is approved, you will receive your green card in the mail.
The process can be complex, and it's advisable to seek guidance from an immigration attorney or a reliable immigration service to help you navigate it.