You may need to disable Gatekeeper on macOS to be able to use the plugins:
https://disable-gatekeeper.github.io/

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To install the VST3 plugins, copy the .vst3 bundles to:
~/Library/Audio/Plug-Ins/VST3

To install the CLAP plugins, copy the .clap bundles to:
~/Library/Audio/Plug-Ins/CLAP

You will need to create these directories yourself it they do not yet exist.

See https://github.com/free-audio/clap#hosts for instructions on how to enable
CLAP support in your DAW.