Hi Sallyann,
Welcome to the Forum.
If you are referring to the Freecell game that came with Windows 7 or Windows 8.1, then you'll need to download a third party installer to get it back. I cannot guarantee the program, and would strongly advise checking it with antivirus software before running it.
URL:
http://winaero.com/blog/get-windows-7-games-for-windows-10/
Alternatively, if you have access to a Windows 7 image file, you could probably extract the Freecell executable and its MUI, paste them to C:\Windows\System32, and the EN-US (or whatever language you have installed), then modify the Registry to point the path to the older executable.
When I get some time I'll see if I can create some one off downloads to allow users to install one off apps, subject to Ian's approval as he is the Site Owner.
Note: The link above installs all the old games and in its zipped form is 146 MB, so if you are on a metered connection keep that in mind before downloading. Also, as already stated --- run antivirus scan on download before extracting or running!