No allow button in security and privacy preferences

When trying to install VMWare in MacOS Catalina, under security and privacy system preferences and then general, I do not see a way to allow what it needs to work properly. Even when I unlock the system preferences, it does not give me an option to allow in order to complete the setup. I also recently tried installing parallels desktop, which requires the same procedure in system preferences, and I was not able to get that working properly either because the allow button is not there. Anyone know why this might be? Thanks so much for the help!