Any component can be made to face the camera. 3D text is automatically created as a component but it is also set to glue to surfaces as it is assumed that you will place the text on a surface in the model. To make 3D text face your camera, create the text and place it in your model somewhere. Then open the component browser window and find the component of the 3D text. Select the component then choose edit in the upper part of the window. Change Glue To menu to “none” and check the always face camera box. Then bring in an edited version of the letters from the components window. You will most likely need to change the component axis to get the letters to face the camera the way you want, right click on the the component in the model space and choose change axis.
An alternate (faster?) pathway is to place the 3D text in your model and right click and choose explode to turn it into raw geometry, then while is it all still selected, right click again and choose make component. In the window that pops up choose always face camera and set the axis correctly if it is not already (blue up, red to the right) , then return to make component.