If you want the chorus to be louder you could always automate the master gain +1dB on the choruses.
Typically if you have more going on in the chorus (more and louder instruments) and you’ve set the master compressor to sound nice and full in the verses, the additional amplitudes going into the master bus in the choruses will just add up to the ceiling and everything will be pushed down by your compressor (or limiter). If you have headroom to spare you can automate the compressor in the choruses and lift the threshold a bit. Just make sure you’re not clipping - if you’re using a compressor with a limiter for example.
Another solution is to lower volume on all tracks in the chorus except the drum track. It all depends on what you’re going for - contrast, evenness, transparency, etc.
Finally, sometimes it’s not about amplitude but about how you perceive different sounds. I believe the term some people use is “psycho-acoustics”. If your drums are centered, for example, adding a lot of wide stereo sounds in the chorus can make the brain think the drums are placed further back in the mix. Reverb and delay also plays in, less reverb brings an instrument closer. Also adding other instruments with higher frequencies will make the drums sound softer. If you want to make sure the drums are up front you should make sure they have some low and high end domains of their own, and make them wide enough so no other track sounds “closer”.