iPhone 11 was discontinued in Sept 2020, so the phone sat in a warehouse at least 4 months and probably longer before you bought the phone.
You can make an appointment at the Apple Store or take the phone to an authorized Apple Service shop to have them check out the phone, but they are going to tell you that the Battery Health is within normal expectations.
In other words, Apple is not going to do anything at this point as far as replacing the battery if that might be what you are looking for.
You can find a list of authorized service shops in your area using this link: Find Locations