Download site
http://luabinaries.sourceforge.net/download.html
Extract (unzip) the lua-5.x._win64_bin.zip
Unzip (files)

Create a new folder
D:\Program Files\LUA
Copy all the unzip files into this folder

Rename the lua54.exe to lua.exe

Append a new path for lua.exe to the Windows 10 System environment variable path

Launch the Lua 5.x interpreter from command prompt (terminal)

If everything has been done correctly then you see the Lua 5.x.x Copyright (C) otherwise check the system variable environment path again. Note the semcolon ( ; ) entries before and after the path value.