How can VW use the Scout name? I'm confused here.
Successor company from multiple sales of the original leaves VW with name rights UNLESS name rights were abandoned along the way. If so, then they could have applied and received those rights. You can be sure that the only resemblance to an original Scout will be the name, 4 wheels and probably 4 wheel drive.

A new Scout to compete with Jeep?
Looks like Bronco and Hummer aren't the only ones trying to cut in on Jeep's market. Now a Scout EV may be coming from VW. The plan includes an EV SUV and an EV pickup. https://www.wsj.com/articles/volkswagen-is-bringing-back-the-scout-the-suv-pioneer-as-an-ev-11652220001?page=1