Waveform (db) not showing up as an option

Hoping someone can help me with this. I want to use noise gate, but I am not given the option to highlight waveform (db) in the side menu, as it isn’t even listed there. The menu shows multi-view, waveform & spectrogram, but not waveform (db). Does anyone know how to fix this?

Right-Click or Control+Click or Control+Tap the track’s vertical scale (on the left)

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