1) Scream [...still can't believe I saw this in theaters at 8yo]
It's simply a masterpiece. Many films can't pull off either of the comedy or the horror, let alone together as well... over 20 years later. Sidney stands right next to Laurie Strode.
2) Scream 2
A little more messy than the first, not as good of villains (but acting was good). Sidney's arc continues even more... Gale/Ghostface in the "studio" is still top 3 franchise moment. The meta was built upon even more and adding to the overall series' ideas. The additions to the ensemble aren't as strong (even tough Olyphant redeems himself with the last 10 years plus of acting) as the original crew.
3) Scre4m
Decent comeback... I wish Wes would have killed Gale or Dewey. Sidney being more on the offensive makes sense, she's always been the badass. The new "group" aren't as strongly written as the originals, but don't feel too gimmicky of "replicating" the originals either which is nice. Also, think Wes didn't go into social media as much as he should have considering the commentary on cell phones/home video Scream 1 and Scream 2 created/had. While the commentary on remakes/reboots was on point, even a head of it's time a little.
4) Scream 3
Really messy and all over the place for a plot and ghost face agenda... but, I love anything dealing with Sidney is this film. In a way I'd cut back on the "movie production" yet it could have been stronger and more influential on the film/franchise. Also, never understood why its "Stab 3 based off of nothing" and not "Stab 2 based off of Scream 2" ala Stab 2/Scream. The first time the comedy bombs, doesn't work - I will say the opening with Cotton (RIP) is legendary for the franchise and the whole fake Ghostface hiding within the rack of Ghostface costumes is a top 5 moment. The one thing I didn't like initially was Parker Posey, but it has aged the best or has gotten better through the years. The Grey's Anatomy cop guy was unnecessary and while the whole step brother revenge plot was convoluted... I still get the feels when Sidney and Roman fight.