Ambient typically have a long range, 74ºF on the low end (dips can be tolerated but not for extended periods) and typically 85ºF is an acceptable standard set up high end ambient. Some large scale breeders keep ambients higher but they often do not have hot spots at the same time likely not something a beginner should do.

Hot spots vary a bit smaller snakes often do better (IMO) with lower hot spots I keep my baby royals at 88ºF adults get a warmer hot spot around 90ºF but most accept 94ºF as a high acceptable.

Humidity is more complex an answer. Royals need around 15.5 gm/m3 of water vapour for a good shed. Like all % the amount varies. (10% of a 1000000 is very different than 10% of 10) Relative humidity % is the same the actual humidity varies as the ambient temp changes.

Loosely

@80ºF you need 60% RH (15.5gm/m3)
@74ºF you need 72% RH (also 15.5gm/m3)
@85ºF you need 51% RH (still 15.5gm/m3)

The warmer the air the more moisture the air holds. Outside in the winter (if you get winter...) 60% RH is dry in the summer 60% is humid.