I use ios 14.4.1 and same or similar ipad and i can say : there is no way for force zooming (only shortcut with 3 fingers and moving magnifier ) but there is an option in accessibility settings (only there and in shortcuts) to make font size up to about 1000 times bigger than normal and it resizes also icons, ( i just saw that when moving this font-slider in setting and watching icons of settings’s tabs )  it’s named „enable bigger fonts” and should be over this place where you choose font size - [/settings/accessibility/screen and text size/text size/larger fonts] you can also bold text if you want in category above text size. Btw - you can force that but then it’d really be hard and then you’ll need to modify ios.