These are the files you need to configure Marlin 2.1.2.0 to work on the Ender 3 Pro with the BIGTREETECH SKR-mini-E3 V2 controller and the TFT35 E3 V3.0 Touch Screen. • The Extruder and Z-axis stepper ...
Hopefully this helps you out, I got my klipper working by copying other people's printer.cfg files.