Thank you all for the installer checking and your support. It took me a night to really think about the Windows Defender popup and why it was happening. The warning crossed my mind because I understood that I'm basically presenting a possibility of introducing malware in the form of an exe. Of course the installer itself wouldn't be that code but with every installer containing different information, how would Windows be able to detect that.
I did research how I could possibly go around that by applying for a certificate with a known CA and then signing my installer. That of course cost money (for Windows to accept it) and I'd imagine the process would take time.
The way around the defender warning I discovered was to zip the contents of the Unity exe and data folder and to upload that. When I downloaded the zip, it did not show a warning which I'm guessing is because the exe is already signed by the Unity company and the code within the data folder is not known as being dangerous?
In any case, I think in the future, I will submit both a zip file and an InnoSetup file. The InnoSetup file is great, I know. It's a simple one click install without messing with unzipping stuff but at the same time, I'd personally would like to not have to turn off a Windows security setting or make an exception to run an exe and think there's going to be other people that will feel the same. None the less, I'd understand why other people would want to disable that setting as well and I figure, with the knowledge and understanding of IT that I have, there are safe ways of doing that.
In any case, I appreciate all of your support. This has given me a better understanding of how to go about doing things and knowing how to do these things. As a new game developer. We (me and N.) are learning new things.