When it comes to protecting your Galaxy S7, don't cheap out on the screen protector. That's the most fragile part of your phone.
Skinomi is a trusted brand who's made some of the best screen protectors for years. This is curved plastic, not glass, just so you know. If you've had bad luck with glass that doesn't fit, this is a great alternative. The Skinomi TechSkin perfectly covers the entire screen.
You can still install a case without it pulling up the protector, too. This accessory has precision cutouts for the fingerprint scanner, earpiece, and sensors. Skinomi also has a Matte finish (fingerprint resistant) option that's worth trying out.