What scores do I send?

June: C: 29 E: 29, M: 31, R: 27, S: 28 W: 11/12
Sept: C: 30 E: 29, M: 30, R: 32, S: 28 W: 36/36
Oct: C: 31 E: 35, M: 27, R: 32, S: 28 (No Writing)

I am applying to Engineering schools so wouldn’t I want to send my June one since it was my highest math score?

It looks like June is your best Math, so I am a little confused by your question.

For schools that do not super score send October.

@HereToHelpYou I know June is my highest Math, so since I am applying to Engineering schools, in addition to June which should i send.

I see what you are saying now.
Send the October and June.