Apple India — battery performance

Address: Ground Flooe, Benaka nelaya,Basavanapura main road,Near amar jyothi public school,kr puram,bangalore-560036

Hi team apple,
My concern is all about that i am facing battery performance i not good, i purchased my iphone xr 5 months back. My iphone is under warranty, so because of this coved-19 no iphone care centers are openind. So my warrenty would get extend or else is their another way to check my iphone xr and issue get resolved. (I chareged my iphone xr to 95 % with in hours the battery will go down to 50 to 60%, and my battery health is showing 98%, with in 5 months how come it should happen)