How will Harvard consider my SAT scores? They don't Superscore.

I took the SAT once and got 790-M/680-English. Now I am scheduled to retake it on Saturday. The problem’s that I only studied in order to increase my English score, and I forgot somethings about the Math test. In the last practice test I got: 740-E,700-M.Will this drop in Math be an disadvantage?

Yes they do; they don’t superscore ACT, but they do superscore the SAT

https://college.harvard.edu/admissions/application-process/application-requirements