Hi missflit
I am Dave, an Independent Advisor, I will help you with this.
1
If you have a Windows.Old folder in the root of your C drive:
Open Windows.Old, and navigate into Windows\Fonts in there and see if your fonts are available
If not, in the Windows.Old folder, navigate into the Users folder and into your user folder, are the fonts in the Downloads folder, or anywhere in there?
2
If you still cannot find them, when you purchased the fonts, did you back them up anywhere on your PC, before installing them?