Ok lets say, he found the cure for senesecence. Aged through time, and is now in impecable health. He'd probably start the discovery of new inventions. Which would say fasten the creation of things like the internet, electronics etc.

All in all, you'd take the combined wealth obtained by successful tech based entrepenuers. So thats the fictional Iron Man, Elon Musk, etc.

I mean if you look at someone who's CV contains self-attributed polymath and Renaissance artist, yeah..Da Vinci living up till now, would meet countless opportunities to interact with great minds and further his knowledge.

He's sure to be hired by most blue chip companies and with the priceless art that he painted, you're looking at around a couple hundred trillion dollars of net worth.

Take from his historical accounts and testimonies. He was a known sodamist and provacatuer. I'll bet Da Vinci would hit up a night club and party. Because what do rich people do? Well you're so accomplished - you're gonna enjoy being Leonardo Da Vinci.