You can do something like this:
if OS.get_name() == "Android":
var export_config: ConfigFile = ConfigFile.new()
var err = export_config.load("res://export_presets.cfg")
if err == OK:
print(export_config.get_value("preset.1.options", 'version/code'))
print(export_config.get_value("preset.1.options", 'version/name'))
else:
print('[engine_root] Error open export_presets.cfgs')
export_presets.cfg need to be added manually to list of files to be exported
maybe you will need to change this param "preset.1.options"