This question sort of misses the point. There is no hard number I can give to someone to say this is where you need to be. More importantly, I can’t predict what sort of levels of strength someone is capable of, given a host of factors including age, injury history, genetic endowment, etc…The point is to approach the process with a view towards accomplishing what you can, through smart, consistent, effective training. What it means is that if you are a novice, begin training with a simple linear progression on the basic barbell movements. You might start with a number in your head (“If I can deadlift 135 lbs that’ll be strong enough!”) and find that 2 weeks into training you’ve already surpassed that milestone. So keep going!
There will undoubtedly come a point, usually, 3 months or so into this progression, where strength slows significantly and changes in programming are needed to spur further growth. 3 months in, however, and you’ll have a new appreciation for the process of getting stronger, and you’ll be better able to assess what you want to get out of your new strength. You might be a runner, for example, and find that after a 3-month novice progression you want to ramp up your running training again. So you pull back a little on your strength training and do more running. If you start strength training with the mindset of what you deem to be enough, you may prematurely limit your abilities. Focus on small improvements each session, and let the chips fall where they may. You might surprise yourself with where you end up!