Invisible plane

How can i make the check_screen plane invisible . And also can i use mongoDB with playcanvas?

You can remove or disable the model component, it will then stop rendering.

Yes, you can use MongoDB in your server and use a Rest API to communicate with it in PlayCanvas.

I want it to be present , just invisible so that i can trigger collision component with it

That’s good, you can add a collision component for that. You don’t need a model component for the trigger.

Check the triggers example here for how that works: