Hi my name is Ross, I'm an independent advisor. I'd be happy to help with your issue.
Curl is a utility used to make http requests, its typically used by developers and system administrators. It has been included in the newer Windows 10 builds so is nothing to worry about.
Please see this article for further details:
Regards,
Ross
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.