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Press the Windows key + R on your keyboard.
In the Run window that appears, type %appdata% and then press Enter or click OK.
Find and open the folder named .minecraft

Put the datapack file into the map folder in the saves folder in .minecraft.
Put the resource packs files into the resourcepacks folder in .minecraft.

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Put the datapack into the map first, then enter the your world, so that when you enter the world, the datapack has already reloaded.

Use the resourcepacks first, then enter the world. 
This is to ensure that the models and text appear. If the text doesn't appear correctly, reload the world.
