So called liquid screen protectors are a bad idea. At best this product will interfere with (and reduce the effectiveness of) the advanced anti-reflection treatment of the iPhone 17 Pro's screen. Use of a liquid coating on your iPhone sceen is irreversible - and may invalidate your iPhone's limited warranty.
If you wish to add additional and effective physical screen protection to your iPhone screen, you would be best advised to invest in one of the better tempered glass screen protectors that include an anti-reflective surface treatment (e.g. Zagg InvisibleShield XTR5).
Good quality tempered glass screen protectors offer effective protection from impact and abrasion damage - and, importantly, are fully reversible by simply removing the screen protector from the iPhone screen.