Most things work on most sites, however it’s not near daily usable yet. It currently passes 1,767,739/2,060,633 web platform tests. wpt.fyi/results/?product=servo lists out all the tested apis and their pass rates
They report a score which is not very correlated with the number of tests passed (there was a big increase in the number of tests that pass in 2023 but the score barely rose). I could not figure out how to show the score for other browsers on wpt.fyi.
WPT Pass Rates - Servo aims to empower developers with a lightweight, high-performance alternative for embedding web technologies in applications.
Servo is a web rendering engine written in Rust, with WebGL and WebGPU support, and adaptable to desktop, mobile, and embedded applications.