How much does it cost a Russian citizen to get a green card to stay in the us if not married and live together?

For a Russian citizen seeking a U.S. green card without being married to a U.S. citizen or permanent resident, the process typically involves applying for an employment-based visa or a family-based visa through a qualifying relative. The costs can vary significantly, but generally, the application fees alone can range from $1,200 to $3,000, not including potential legal fees, medical exams, and other related expenses. It's essential to check the latest fees on the U.S. Citizenship and Immigration Services (USCIS) website, as these can change. Additionally, the process can take several months to years, depending on the visa category and individual circumstances.