We don't have a consistent scene I wouldn't say, since people tend to come on whenever schedules permit and battle/trade/etc whenever they feel up for it. But you can join the PC discord and see if anyone would be interested in anything =) I personally like doing random battles on showdown, it is super fun, but I don't have much time to do it consistently nowadays! haha
I also need to trade more but since there's no national dex in SuMo and USUM it hasn't been as huge of a desire </3