Howdy and welcome, what scale you choose is depended on how much room you have. I chose 1/72 scale because most of the aircraft aren’t too big. For the most part you have a very good selection of large aircraft to choose from as well. B-52s, B-36, XB-70, Flying Wings, C-130 Herky Birds, B-1Bs, even a Concord SST are available. They offer moderate detail and you will find there is a lot of after market detail stuff out there for 1/72 scale aircraft.
1/144 allows you to have quit a selection as well and display your aircraft in half the space. Detail in the kits is often rudimentary but I’ve seen modelers do some outstanding detailing on 1/144 scale models.
The 1/24, 1/32/35, and 1/48 scales offer a lot more detail in the kits that are out there but a modeler who is starting into or back into the hobby will find the selection gets more sparse in injection kits offered as the scale gets larger. All scales offer vacuform, resin, or multi-material kits foe larger aircraft. I have never assembled a kit that had fiberglass, plastic, metal, and resin parts as components of the kit. Do not be afraid to ask questions, the only dumb question is the one not asked. Again welcome to our forum, Magoo