They're light and fast, would have been perfect to exploit the Kharkiv breakthrough last year. They're not meant to attack head on hardened defences, so they'll stay in the rear for now.
Also, maybe they could be put to use on the Kherson crossing? I know russians have some difficulties deploying heavy equipment to counter-attack there because of the mud and the marshy terrain. AMX-10 are lighter, but they also have wheels, so not so sure about that...