Page views in the event of a DDoS attack

If I import the raw log of a DDoS attack where the site is accessed 10000 times per second by the same IP address, will the PV count be archived at 10000PV?

Yes correct, in a standard setup of Matomo it would track all of the pageviews. But if you configure the Tracking Spam Prevention plugin and set a limit to the number of actions, once that number of actions have been tracked it should block that specific IP from tracking more actions