Just a FYI, dotNET CORE is a set of libraries. If you end up including any of those libraries, you’d end up needing at least dotNet Core, and if I understand right, the SDK. If you were just using some software that used dotNET CORE, you’d need that, but I’m fairly sure they’re included in Windows 10.
It’s very common for C# developers to use it and keep it up to date, but Unity uses a specific C# library. I believe it’s a slightly older dotNET CORE library. Don’t quote me on this, I could be well off the mark. So far I haven’t cared to look that far under the hood.