I’m new to music production but something like what he is doing at min 15:00
if I understand you right, you're asking if MiniMeters can limit your track.
it can't. MiniMeters is only a metering tool, which means it only shows things like LUFS, waveforms and frequencies it doesn't change your audio at all.
To control your loudness, use a limiter plugin like Pro L 2. if you want to use stock plugins, most DAWs already have one for example FL studio has Fruity Limiter, and Ableton has a plugin called Limiter.
Hopefully that helps good luck on your music journey.