Sharing has been widely broken in WIndows 10 since they removed automated HomeGroup, which many think is to push us to use OneDrive, which I'll discuss a bit later.
1) Check over these steps for how to set up simple file sharing in WIndows 10:
https://pureinfotech.com/setup-network-file-sharing-windows-10/
https://support.microsoft.com/en-US/help/4092694/windows-10-file-sharing-over-a-network
2) If that doesn't work then try these fixes for file Sharing:
https://www.lifewire.com/troubleshooting-windows-file-sharing-818241
https://appuals.com/how-to-fix-the-windows-10-file-sharing-not-working-problem/ (Avoid ad links which intrude into editorial copy, especially avoid Restoro and Reimage ads)
https://www.windowsbasics.com/2020/02/how-to-fix-windows-10-file-sharing-not.html
https://winaero.com/password-protected-sharing-windows-10/ /network_sharing_troubleshooting_tips.htm
https://www.guidingtech.com/fix-window-10-file-sharing-not-working/
https://www.wintips.org/fix-windows-10-network-computers-not-showing/
https://techcult.com/fix-windows-10-file-sharing-not-working/
https://www.youtube.com/watch?v=1891lnmTxuA
https://www.youtube.com/watch?v=PqC9qiEfcZs
3) See here how to set up network file sharing using OneDrive:
https://www.alphr.com/cannot-see-shared-folders-windows/
If you were referred here from another thread, please post back results in that thread. Otherwise you can ask questions and share information in the Comments section below, including any broken links.
______________________________________________
Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.