I'm an instructor. 47 is not really any issue as long as you're reasonably fit and have a positive attitude towards trying something new. My oldest beginners have been in their 70's and they have still managed to have a good time skiing some of the easier runs.
Some tips:
Get yourself fit - cycle, walk, go to the gym if that's your thing, do some stretching exercises. If there are a few "extra" kilos hanging around, try to lose them.
Do a trial session at a snow centre (Milton Keynes, Hemel or Chill Factor in Manchester) to get a feel of what it's like - but don't expect to be an expert after just one or two sessions.
Pick the right resort - or rather, stay away from the more difficult resorts. For beginners, Saalbach-Hinterglemm is better than St. Anton. La Rosiere is easier (and cheaper) than Courchevel. The Tour Operator websites (Nielsen, Crystal, Inghams, Heidi etc) usually grade the resorts, or look at the Snowheads website.
Get the right instructor. An older instructor who understands the physiology of beginners aged over 40 and who paces and adapts the lessons accordingly is by far the best option. Snowheads is a great source of information and you can ask on the forum there for recommendations, both for the best ski schools and the best instructors in a given resort. Group lessons can be great fun - everyone is in the same boat and you can learn and laugh together. Individual private lessons usually help you to progress quicker, but these are more expensive.
Be positive - skiing really is fun, which is why so many people rave about it. Modern equipment has made it far safer and more comfortable than it was even just 10 years ago and many resorts have also focussed on making the pistes safer, particularly for children and for beginners. Thankfully things have moved on since this famous BBC documentary from 1987 ... 😆