You can set it in your Work Environment so you can only open one view (tab) of each type of view (elevation section, detail, layout).
But is is either just one or many, you can't specify a specific maximum number.
One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10