As
Lockheart said, it depends on several factors, while render with just one character and a simple background can look good after just a minute, complete environments like I usually do, can take a long while to render.
The currently running render took 1h and 25minutes so far and is almost done (needs maybe 10 minutes more), but it's a fully furnished room with 3 characters and low light and I need to give it a bit more time than usual, or it will be too grainy and if you use denoizer it will look washed out and and a lot of detail will be missing.
The average for me is roughly 20-30 minutes, but that does not include the time to create the scene, which usually takes even more time than the rendering (for me at least, I'm as picky af)^^
But if you have one 2060 and you're working with two Genesis 8 models and a rather a medium sized room, it might take a few hours
If your render take several hours for that with a 2060, than there's definitely something wrong with the scene or it simply jumped to cpu rendering^^
I did (with optimization) exterior render with 3 to 9 people and several full buildings on a GTX 1060 and GTX 1070 (not Ti) in 1-2 hours per render, and that was before the denoizer was introduced to Daz^^
Jeez, I'm a slow writer, the render just finished xD
