In the ScriptableObject SimpleTranslationData create and define the folder where the downloaded spreadsheets will be located (Remember that it must be inside a Resources folder).
3 - Step
In the Localization script, set the worksheets folder directory from the Resources folder.
4 - Step
In the Localization script, clicking on the three dots of the component, save the modified information (Every modification made to Localization must be saved before running the game).