Sending my SAT Scores?

I’m a little confused. I took my SAT last year and have (what I think to be) a pretty good score, however I am taking it one more time November 7th to see if I can do a little better. My guidance counselor told me that I should start sending my scores to colleges I want to apply to, but what if after I send those scores, I get the score for my November 7th test and it is better than the first one? Do I send the new one? Will the colleges know to replace the old score with the new one? Is there even a benefit to me sending my scores now or should I just wait? I’m just a little confused as to this process. Thanks for any help!