What do you think a renaissance man/woman must achieve before gaining this particular title in life?

S/He could live between the 14th and 17th centuries to gain that title.

You would have to master a number of artistic and scientific disciplines to a better than average level.

I believe it usually involves being skilled in both intellectual pursuits as well as practical and/or sporting ones.

here is my stab at what you are asking.
It is meant that he does not just have broad interests or a surface knowledge of many fields, but profound knowledge. He also has proficiency or accomplishments in at least some of these fields In some cases even an expert. I dont think he is a Jack of all trades/master of none, but more so a Jack of moany many trades and master of most. He is well learned and interested in learning more and digging into to things he does not know and masters them. His approach to knowledge is that of the specialist.

In the Renaissance times, an educated person had to be self educated. In our time, a well rounded, mostly self educated person is called a renaissance man/woman in recognition of that golden time of yore.

I consider my best friend to be something of a ‘Renaissance Man’. Every job he has ever held he took because he wanted the life experience it would provide him. He has taught physics at the university level; worked as a policeman in a large city; driven an ambulance in the same large city; owned and operated both television repair and computer repair shops; worked as an auto mechanic, worked on/invented some sort of weather satellite thingy, and is also a published author.

Those are just the jobs he’s held that I can remember off the top of my head.

They should have a few practical skills and a few artistic skills, as well as being up on current news and culture. They should be knowledgeable about food (probably a good cook), have a deep knowledge of literature and history, and pretty much be able to talk on just about any topic, or spout off a poem, or sit in with the band, or demonstrate some dance or gymnastics move. The usually know at least two languages. They should be pretty flexible and able to fit in in any situation.

Mostly I think it’s a way for people to say they are impressed with the wide range of knowledge and skills someone has. It’s not easy. I don’t know if I’ve ever met one.