Create text
The fastest way to add text is through html and to style that text you can use css.
html
<div id="description">You text goes here</div>
css
#description {
position: absolute;
top: 10px;
display: block;
inline-size: 100%;
text-align: center;
z-index: 100;
}
Procedural Text
If you to create procedural and dynamic 3D text, you can create a THREE.TextGeometry: new THREE.TextGeometry( text, parameters );