@wwyd2021medicine I think some of it is trial and error. I'm 130lbs and I aim for around 120g a day, but that can fluctuate between 90g to 140g depending on the day (lower days are usually if I've had to grab food on the go) I probably average around 100-110, I am still making progress and building muscle on that though.
I know that some people will have a 'more is more' approach, but two things to keep in mind (at least from my experience) would be -
Protein is very satiating, and it's still calories. If were to eat 170g + a day, I know I'd struggle to eat it (at all). I certainly know that I'd struggle to eat that much protein and keep under my overall calorie target, unless I was either replacing meals with shakes or nibbling on plain chicken for snacks, neither of which I want to do. I'm not trying to lose weight but I also don't want a huge calorie surplus. I know I'd run the risk of cutting down on other important food groups to find room for the protein and that's not great.
A lot of people find that too much protein will give them digestion issues, eg if it's a lot of meat, slower digestion/constipation, if it's a lot of protein shakes, feeling bloated or gassy. Also compounded by the satiety issue, because if you're feeling really full on protein you're less likely to fit in the fruits & veg & other sources of nutrition that you also need to be eating.
Of course there will be some people who find it manageable, whether it just suits them, or they can find a way of eating that works (eg for keto it's possible to eat v high protein and be relatively low calorie overall, and some people feel energised on keto diets, I'm not one of them!)
I think it's worth playing around with, a good benchmark is to aim for the 1g per lb of bodyweight at least because it's an easy target to work out and aim for, and adjust up or down as needed. Ultimately it needs to be sustainable for you.