Example resource-pack that removes the score numbers from the Minecraft sidebar (1.20 - 1.20.1, may work on other versions)
It modifies the rendertype_text core shader, which renders all the text in Minecraft,
and just sets a condition: If the text color is #FC5454 (The red color of the numbers in
the side-bar) and it is near to the right side of the screen, hide it!
However, there are some cases in which another type of text meets the condition, for example,
the false text in the debug screen
The distance to the right side of your screen required to meet the condition is specified
in this file, ScreenSize.x - gl_FragCoord.x < 69,
where 69 is the distance