How do I keep iPad screen on constantly?
To keep your iPad from going to sleep, update the Auto-lock setting. To do this, go to your iPad Settings > Display & Brightness > Auto-Lock. Set Auto-Lock to "Never". This will keep your screen awake, but still respect your screen dimming settings.
How do you make your iPad screen stay on without closing?
If you do decide to use your iPad or iPhone for an 'always-on' experience, then there's one setting you'll need to adjust so your device doesn't automatically turn off. Go to Settings > Display & Brightness. Tap on Auto-Lock. Tap on Never.