I mean, if you're looking for sub-1% accuracy, you're not going to get it, but polls are usually accurate to within a few percent. In the US, the last couple of elections were quite close, so fairly small misses had a big impact (at least in 2016; in 2020 the only state that was clearly a wrong call based on polls was Florida, and arguably Georgia).

Notably, polls were generally fairly accurate for the US 2018 midterms.

In general, polls work better in electoral systems where national polls are useful; the US presidential election in particular is challenging.