Renouncing US citizenship doesn’t affect your Social Security retirement benefits if you’ve already qualified for SS retirement benefits by working 40 quarters (10 years) while living in the US. If you live in a few red zone countries like North Korea or Cuba your monthly benefits won’t be paid but that’s the only restriction.
If you haven’t yet qualified for SS retirement benefits before you left the US but are still a US citizen and you live in countries with a “totalization agreement” with the US you may be able to meet the 40 quarters requirement while living abroad. Taiwan does not have a totalization agreement with the US though.