Try googling
ocr scanner software free download
or just
ocr scanner software

I have no idea how well the free versions work. Sometimes when it's advertised as 'free' it is in fact trial-ware or some other limitations deliberately put onto it.

1. I found these links which are all the one software called "FreeOCR" but it does not say Windows 10 support: Free OCR Software - Optical Character Recognition and Scanning Software for Windows - import from PDF and Twain Scanners
/ FreeOCR Downloads for Windows.
Review: FreeOCR | Gizmo's Freeware. But be extremely careful of the 3rd party (Malware) options in the installer.

2. Online OCR service Free Online OCR - convert scanned PDF and images to Word, JPEG to Word simply upload the scanned file & have it converted to text.

I can't quite remember but I think the name of the OCR software I used was OmniPage and very good but it was a commercial software and not cheap.