You can check your phone's processor, model, and system version through About Phone/Device.
View method:
realme UI 1.0 & above versions: Settings > About Phone / Device
realme UI R & Go & U & S & T Edition: Settings > About phone / Device
Processor
The name and the model of the processor.
Model
The model number is the identifying number of the phone.
realme UI version
The realme UI version refers to the system version.
Android version
The Android version refers to the Android version corresponding to the system version.