I manage to work, by putting to /opt/bootlocal.sh the following lines:
mkdir /lib/modules/5.10.39-piCore-v8/kernel/drivers/net/wireless
cp /opt/WiFi/8192eu.ko /lib/modules/5.10.39-piCore-v8/kernel/drivers/net/wireless/
depmod -a
modprobe 8192eu.ko
But I'm wonder if there is another way