Re: Scorpio dog tag?

You have to finish the community mission: Get 25 kills with a handgun for the Scorpio Dog Tag. This is to be completed between 2nd and 8th November. You can track your progress in the community mission tracker in-game, and once you have fullfilled the requirement you can claim the dogtag as your reward.

Now handing out of dogtags differs. These can be handed out in batches after the finish date of the event,  but sometimes like for example with the Halloween 2017 dogtag it becomes immediately available.

Anyway get your 25 handgun kills in time and the dogtag should be yours, sooner or later.