So, it scales well with multiple peers? Are all peers aware of each other or are you using some sort of hub and spoke topology?

I created a script to distribute the configuration to all relevant VMs.

A network configuration is basically: a port, a name, a set of peers(public key, external ip, wireguard ip). If you want, you can distinguish between master and slave peers (=the slaves do not know/trust each other; master knows everyone)

What is the maximum number of peers you have scaled it to per Wireguard server?

I don't have "user" peers. I just use it to connect the VMs. So around 50 I guess.