Absolutely. Of course there's plenty money can't fix, but (assuming it's not an obscene amount which could cause different issues) I do believe that it would solve the vast majority of the most pressing problems, here and for almost everyone I know. Off the top of my head we could:
Sort out pensions which for me in particular is a big worry (self employed, screwed by xh, etc)
Finish the house and get a cleaner and some help with cooking/meal planning
Build a garden room of some sort to enable a closed off workspace, which would help enormously
Get any necessary dental treatment without panic/borrowing/stress
Arrange private health investigations/treatment where needed
Replace knackered old cars with more reliable and safer ones
Work fewer hours, enabling me to see my elderly parents more and do more for them.
Also more time to keep up with/help out friends and other family, all of whom are scattered around the country and many of whom are having a tough time.
Go on holiday! We haven't been away in many years as I can't afford to take time off work (except a 3 day honeymoon last year, which our guests kindly paid for). We would so love to be able to take my daughters away.
Oh, and buy new clothes/shoes. Much as we all love Vinted, I'd really love more time/money/headspace to look less shit.