With Bob Dylan considered one of the most important musicians in and after the 1960s, it's not surprising that trying to sort out the best Bob Dylan songs is a popular tag.
The answer, if there is one, is complicated. Dylan has written and recorded hundreds of songs. Moreover, Dylan's evolution as a performer leads to numerous lists, relatively short or very long, of what constitute the best Bob Dylan songs. Likewise, each list has its own approach or take on the question.
Ultimately, the best Bob Dylan songs are determined by the individual listener.