If you have active subscriptions you must go to this link: https://www.solidworks.com/sw/support/mcad-certification-programs.htm
Than on the right you have Certification Offers for Subscription Service Customers.
I do not believe sa tandard license without a subscription will include any of the exams. However it is best to call and talk to your VAR and confirm, they might be able to help you out.
Yes if your on an active subscription you get a couple exams for free every 6 months. Ok I guess they are not free, but included in your subscription cost. So they are already paid for.
In fact they told me that they now give each user the 'free' exams, not each seat. So if you have multiple shifts at your company or share the license with someone else you both get to take the exams. I think this is awesome, even though we have the same number of seats as we do regular users.
The exams (on an active subscription) are reset every 6 months and do not accumulate, use it or lose it.
Also, if you took / are taking a SW class check with your prof. they might have access to exam codes for you to use.