Bill, you could try renaming your golf folder to something like golf1 for instance, then run the game again.
If it installs successfully then you can delete your golf1 folder because there should be a new golf folder there.
Erv, are you getting the golf.exe not found error message too?
POSSIBLE SOLUTION :
If, according to the list of files in my post above, the golf.exe file is the only file missing in your golf folder, then you can download that file from my Google Drive...
golf.exe
...once downloaded, cut or copy it from your downloads folder and paste it into your golf folder.
If you don't know how to find your golf folder, hold down the Windows key on your keyboard and press r. Then, in the run dialogue box, copy and paste this in...
C:\Program files (x86)\Topgolf\WGTLauncher\golf
...then hit OK or enter. That should open a window showing the files inside the golf folder. Paste the downloaded golf.exe file there. Now try running the game.