The Thames & Kosmos Chem C3000, is a pretty solid chemistry kid for a late elementary early middle school age child. I think I picked it up with an actual glassware kit from amazon ten years ago. At least in TX they have repealed the dumber restrictions on glassware. In the US the local Barnes and Noble stocks science kits, as do science museums, and the internet is a source for a lot of this stuff from places like
https://www.homesciencetools.com/. Getting chemicals for some of the more "dangerous" reactions sometimes takes a bit of digging, or simply knowing how to synthesize it for your kid, who of course should probably have a parent on hand anyway.
And of course ebay and archive.org/etc is a source for the old manuals or even kits (I recently saw the SFX-4000 aeronautical lab kit in an old fashioned toy store in town BTW) if you can't be bothered to grab the manual and do a bit of footwork to restore an old kit. But frankly people have to fond of memories for those kits. For example, a good used microscope from a college can be picked up on ebay and some slide + stains for just a few dollars these days and its a far more useful tool that the cheap toy oriented kits. And while I printed and bound a copy of the golden book of chemistry some years ago, one should really read more recent criticisms of that book before handing it to your child (ex; don't go tasting lead based compounds).