Using the https://valorantsimulator.com website.
I have seen which maps SEN or C9 would win against each other and these are the results.
Ascent:
SEN 10-13 C9
Icebox:
SEN 13-8 C9
Breeze:
SEN 16-14 C9
Split:
SEN 16-14 C9
Pearl:
SEN 10-13 C9