Goodr sunglasses are generally designed to be both slip resistant and sweat resistant. They are made with a lightweight frame and a special grip coating that helps them stay in place during running, workouts, and other active use. Many people choose them specifically because they are intended to reduce sliding when you sweat, which can be a common issue with regular sunglasses.
That said, performance can vary a little depending on fit, head shape, and how much moisture or oil is present. If the frames are the right size and you are using them for the kind of activity they were designed for, they usually hold up well. They are especially popular for exercise because they are meant to stay secure without feeling heavy.
If you are looking at a specific pair, the current product page is the best place to check for any model specific details about grip and sweat resistance.