When the formula for the sorting option is equal for all shops, there is no need to create multiple sorting options. For example price highest-lowest and lowest-highest. The formula stays the same. The only difference is that the display name in the sorting template should be in another language.
Sorting options that use Google Analytics data, do need to be copied. The Dutch shop needs to use the Dutch Google Analytics data, while the French shop needs the French data. The rest of the parameters can stay the same, only the Google Analytics data need to be replaced.