How long can I stay abroad without losing my benefits?

Generally, we cannot pay Retirement, Survivors, and Disability Insurance benefits to noncitizens after their sixth calendar month outside the United States. However, you might qualify for an exception, which could allow you to receive benefits without visiting the United States.

https://www.ssa.gov/international/payments.html#:~:text=Generally%2C%20we%20cannot%20pay%20Retirement,without%20visiting%20the%20United%20States.