How long does render need to set?

Excuse me, I'm just curious about the rendering process. Could you possibly explain to me how long it typically takes for the render to be completed? I've been working on a project and I'm trying to estimate the timeline. Is there a general rule or does it depend on the complexity of the scene or the hardware being used? It would be greatly appreciated if you could provide me with some insights into this matter. Thank you in advance for your time and assistance.