sui_scoreboard_modified_v4.zip

This download looks like an addon. You need to extract the downloaded zip and put the addon folder in your Garry's Mod addons folder. You should end up with a directory structure similar to below:

• steamapps
  • common
    • garrysmod
      • garrysmod
        • addons
          • sui_scoreboard_modified_v4_no_utime <-- Addon folder!
            • e.g.
            • lua
            • maps
            • materials
            • models
            • etc

• sui_scoreboard_modified_v4_no_utime/
  • info.txt
  • lua/
    • autorun/
      • sui_scoreboard.lua
    • sui_scoreboard/
      • admin_buttons.lua
      • cl_tooltips.lua
      • player_frame.lua
      • player_infocard.lua
      • player_row.lua
      • rating.lua
      • scoreboard.lua
      • vote_button.lua

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