dbghelp.dll
This file is not a system component: windows, or the program that bundles its own copy. Restore it from the source that installed it rather than downloading a replacement.
Do not download this DLL on its own
Searching for a missing DLL by name leads to sites that hand you that single file. It is one of the oldest and most effective malware delivery methods there is, and a system DLL from an unknown source is indistinguishable from a deliberately modified one. There is never a legitimate reason to obtain a runtime component that way.
What it is
The Windows debug help library, used to read symbols and write crash dumps. Windows includes a copy, and many applications ship a newer one of their own next to the executable.
Where you see it: Games and applications when they try to write a crash report, and development tools.
Two different files share this name, which is why the error is confusing. Look in the program folder: if a dbghelp.dll is there, that private copy is the one that failed and reinstalling the program replaces it. If it is not, the system copy is damaged and "sfc /scannow" is the repair. Take note of the context too: this file usually appears in an error only when the program was already crashing for some other reason.
Why there is nothing to download here
There is no verified download we can offer for this one, because installing a file is not the fix. The steps above are what actually resolves it. That distinction matters: the sites ranking for this file name are selling a download that would not have helped even if it were safe.