Is it worth going through the 3500 word list of Barrons before the SAT
Like i have around a month left
Absolutely not. You can use your time more effectively practicing with real college board tests. Make sure you thoroughly review any question that you were not absolutely sure about. Your review should take at least as long as it took to take the test. If you do that properly, and spend the t imd you would ave spent memorizing 3500 words, you should much better prepared for the test.