Hey there, CSC703!
Welcome to Apple Support Communities! If we understand correctly, you inserted your SIM card into your iPhone without the SIM card tray, and now you cannot remove it from the iPhone. We can understand wanting to find the best steps to take to have it removed.
If this SIM card is currently stuck in the iPhone, you'll want to take the device to your nearest Apple Store. Here's how to Find Locations near you. The other option would be to Contact Apple for support and service. We hope this information helps you out.
All the best.