HappyHUD lets you make really customizable HUDs
This will just detail how to properly make HappyHUD compatible with Oraxen in a few easy steps. To do so follow these steps:
  1. 1.
    Set hide_scoreboard_numbers: false in settings.yml
  2. 2.
    Delete Oraxen/pack/shaders/core/render_text.vsh and render_text.json if they exist.
  3. 3.
    In HappyHud's config, enable copy-resource-pack and set path: "Oraxen/pack/assets" (HappyHUD 2.7-SNAPSHOT and above)
If you really want to also hide scoreboard numbers, you can manually merge Oraxens shader file into HappyHUDs in HappyHUD/pack/minecraft/shaders/core/.