Configure cursor size using command-line on Ubuntu 22 Jammy Jellyfish.
You can configure cursor size using GNOME control center.

Get current cursor size using GSettings configuration tool.
$ gsettings get org.gnome.desktop.interface cursor-size
32
Set cursor size using command-line utility.
$ gsettings set org.gnome.desktop.interface cursor-size 48
Use cursor sizes defined inside GNOME control center source code.
[...] guint cursor_sizes[] = { 24, 32, 48, 64, 96 }; [...]