If you have a couple of different sizes of texts you can render out each character into a sprite map and render a quad per character which is probably the fastest and works for most 2D UIs. You can prerender ahead of time or have some runtime code that renders the characters with a given font using the 2D canvas api. You will need also need to store the characters sizes somewhere unless it’s a monospace font

If you need to scale the text arbitrarily or render it in 3D space you can look at multi channel signed distance fields (MSDF) which also renders out each character but encodes some extra data which makes them scalable. It has pretty good results