i5-6500 + GTX 960 + Big Sur, would it work?

Hi!

I've been somewhat confused when it comes to Big Sur. I'm forced to use it otherwise I won't be able to publish apps to the store from XCode, but I'm stuck with the HD 530 this i5-6500 has. I do have a spare GTX 960 I can put on the machine, but for some reason I was unable to install the NVIDIA Web Drivers saying it's uncompatible with the Mac OS version.

Is there a known workaround to have the GTX 960 work in it? That way I can use the dGPU instead and have sleep working as intended plus use some of the hardware acceleration for the emulators and whatnot.

Thanks in advance!