The classic pain scale runs from 0 (no pain at all) to 10 (the worst you have ever felt).
There is a problem with this scale – any new 10 redefines the ones that went before. A year or so before lockdown, I had several visits to the hospital. Each of those was a new 10.
Right now, I have no way to describe what a 10 is but, dear god, I hope you never feel it.
As a guide, a 5 was what my 10 used to be. I did not know that that much pain was possible. A 6 is pretty darn-near crippling. A 6 is very very bad but my scale for pain just keeps going.
That said, as my memory of the new 10 fades, I think my scale has adjusted to deflate again. This data is super subjective.
A 1 or a 2 I can cope with. But from 3 onwards what I can manage falls off sharply.