If you didn’t have a Scope Prematch subscription before, you’ll be able to get a free trial. It lasts for days and you’ll be able to use Prematch analytics for 5 matches during that time.
If you use up all of your matches before trial ends, the functionality of the subscription will be limited. In that case you can manually purchase the subscription to keep using the prematch analytics or wait for the trial period to run out. If you don’t want to keep using the subscription, you can cancel it anytime you want in the profile settings.