Airfix used to make a 1/600 France, but it's been out of production for a long time. A long, long time ago ITC did a France in 1/400, which was more recently reissued by Glencoe - but it's been out of production for quite a few years.
Airfix recently reissued its 1/600 Queen Elizabeth and Mauretania.
The lack of liners - and civilian ships in general - has been a sad feature of the plastic kit industry for a long time.
There are a few liner kits, including a Normandie, in resin - but they're quite expensive (if you can find them).
The best source of civilian ship kits, for better or worse, is the huge range of paper models published in Europe. Those things are remarkably sophisticated - and, to me at least, more than a little scary. But they're capable of being turned into mighty nice models.
Youth, talent, hard work, and enthusiasm are no match for old age and treachery.