Is my SAT Score good enough?

October: 2210 (660R, 770M, 780W)
January: 2290 (740R, 800M, 750W)
Superscore: 2320 (740R, 800M, 780W)

Are these scores good enough for:
Berkeley (single-sitting)
UCLA (single-sitting)
Ivies/Mit/Stanford (superscore)

or is it worth taking the ACT? and if so then what score on ACT would be sufficient?

Yes, no need to take the ACT. Work on the rest of the package.

@nw2this thanks
my mom wants me to take act but my dad doesn’t so im not really sure
but there are quite a few 2350+s in my school, which is scaring me a bit

lol i have a 2230 superscore with my single highest sitting as a 2180. Those scores are very good.

Test scores are a hurdle. At highly selective schools, they’re either

A. Really low, cause for rejection in the case of almost all unhooked applicants (at the schools you’ve mentioned, that’s <2000)
B. Low enough to disadvantage your application, to an extent (<2200)
C. Not a problem - high enough to tick the “test scores” box and let the application reader move on to the next item in your application.

A 36 on the ACT is extremely rare, and would offer little to no advantage over a 2320 superscore. A 35 is slightly less rare, and more or less identical to that 2320. There’s no real upside to your taking the ACT.

As @NotVerySmart alludes to, approx. 2200+ are all 99th percentile. Harvard and others have repeatedly said that they consider everything in this range to be in essence the same score, and that a 2350 doesn’t really separate a student from a 2210, much less a 2290. Absolutely stop focusing on this area of your resume at this point.