84% on RottenTomatoes after 62 reviews.
https://www.rottentomatoes.com/m/saw_x
The Saw franchise ranked by RT score;
Saw - 50%
Saw VI - 39%
Spiral - 37%
Saw II - 37%
Jigsaw - 32%
Saw III - 30%
Saw IV - 18%
Saw V - 13%
Saw 3D - 9%
Early days yet with many more reviews to come but it seems an almost certainty that Saw X will be the most critically well received Saw movie. In saying that critics these days are a lot less harsh on horror than they were back at Saws peak during the mid-00s.