This piece is mostly just a bracket to help hold things in place, but it does have contact points on it. So, if you've broken any of those contact points or it is just bent completely out of shape, you can easily replace it.
https://www.mobilesentrix.com/full-set-small-metal-bracket-for-iphone-11
Also, it doesn't hurt to see how the phone works without it. These brackets are useful in most cases, but sometimes they seem almost as if they are just for show.