how long does it take for Apple to replace a battery in a MacBook Pro 2017?
Can it be done in the store while you wait.
My MacBook Pro - Battery Health states "Battery Service Recommended"
MacBook Pro 13″, macOS 11.0
Contact the store you are bringing it to and ask them how long it will take. That is assuming they are open, doing in-store repairs, and you don't have to send it to a repair facility.