If you have further questions
I'll leave a Link to register so you can communicate here , As a guest account you can only post questions but can't reply.
Welcome to Android Central! First, are you certain it's a SIM card and not a microSD card? Show us a photo of it. (You'll have to register on this forum in order to post an image.)
Second, as has been asked many times on this forum (and you can easily search for it, FYI), the Scepter 8 tablet from Q Link does not have a SIM slot -- it's wi-fi only. Are you sure they didn't just send you a SIM card intended for your own phone, so you can use your phone on the Q Link network?