It depends on the use of your device. It’s just an extra layer of protection and has some advantages over others (Like scratch resistance, splash protection).
You can trust Gorilla Glass because they don't just make glasses for smartphones. They also manufacture glasses for industries. Corning is the company that makes Gorilla glass.
So the answer to your question is that it is not significant at all. You have to
replace it with other unbranded screen protectors. You have to
check the reliability of this product before use. And it is
where brand recognition takes place. Corning will provide you
warranty on specific products. And because many users have already used it
so you can obviously trust them.
The choice is yours. If you are able to make the right purchase, it doesn't matter
it is branded or not it will always be worth it.