Free scopes do exist. I know of a bunch of Tek 475s in Florida which can be had for free, local pickup only. However, none of them work. so you'd need to have a working scope to fix them. And considerable skill and patience
I've got several scopes including a Heathkit IO-18 which are free to a good home, but I'm in central Arkansas. Also local pickup only. I doubt that any of them work, though the IO-18 did the last time I tried it which was a long time ago. I'd expect the caps are bad by now.
TANSTAFL