Hey @MatthewSoedesco!
I already see more context that better explains this error:
You are missing your binaries for Win64 specifically. Are you using VS 2019? If not not you will need that version of Visual Studio using the installation instructions in the Unreal Engine Documentation:
Make that Editor Preferences → General → Source Code Editor is set to Visual Studio 2019
Once you are all set up go to File → Package Project and make sure to select the platform you are working with (in your case looks like you need Win 64 so File → Package Project → Windows → Windows (64-bit)). Once you see " Build Successful you should be ready to launch.
You can find more information here:
And here from this non-Epic affiliated thread:
I hope the above solution works for you!