A "Zip" file contains all the purchased templates compressed into one file.
Use your operating system to 'Unzip' the file that extracts all the presets as separate [ .lrtemplate ] files, and have them in one folder that you remember the location (eg. desktop), then-
select the Develop module
Open the Presets panel to see the presets
Right click on [User Presets]
Search the folder dialog to locate your folder of preset templates.
Click the [Import] button.
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