Why are Settings icons greyed out on my iPad Pro?

They are not.

That's the regular color of those icons. They are just gray by default. Just tap on them and they should open.

If they are greyed oud and you also cannot click on this this is happening due to screen time restrictions, you might want to re-evaluate the restrictions set up to screen time

The icon-group in your screenshot - that are seen in your iPad settings - are indeed grey (are not coloured). I note that you have selected Dark in your Display & Brightness settings:

By example, here is a screenshot taken from my own iPad (this screenshot has been intentionally redacted to obscure sensitive information):

Nnaaddiiaa wrote:

Thanks!! Mine looks like yours too. Camera, Apple Pencil etc.. thanks again : )

You are very welcome. You are now hopefully reassured that everything is all as it should be. 🙂