On modern notched handsets like the iPhone X, XR, XS, and XS Max, Apple did away with the numeric battery percentage option for the Status Bar. Instead, the numeric battery percentage remains hidden unless you open the Control Center interface.
I’ve enabled this feature on all my previous iPhones for years, and so this change has felt like a serious downgrade since I picked up my first iPhone X. On the plus side, a new free jailbreak tweak called BatteryPercent12 by iOS developer dpkg_ promises to display the numeric battery percentage in the Status Bar without hindering the battery icon itself.