You can set some reasonably high expectation, not as a target but as an aspiration.

Case in point, once when I was asked it I was "I read in an study that one gets happier with more salary up until 85K€, so my aim is to go towards that range". In the end I ended up halfway between that and my then salary. BTW, the study was then superseded by another that happiness keeps increasing, just not as fast.

Of course your situation might be different, and you could take inspiration for 6 digits, $500K or any other amount that would be perfect for you if accepted because it's higher than what you would have accepted, and you can get something below that that would be a stepping stone.

In Spain, at least, salary needs discussing early, too many divergences between some companies and some people expectations on that. So I disagree leaving it for later.

I don’t want a higher salary, I want a higher net worth so I can not work, or at least not work meaningless jobs that only serve as a high salary. I would prefer $2m in my pocket than a 500k/year ex. tax job.