How do I turn do not disturb off

To turn on/off Do Not Disturb from Control Center:

1. Open Control Center on your iPhone or iPod touch, or on your iPad.

2. Touch and hold Focus, then tap Do Not Disturb.

Turn on Do Not Disturb

1.Go to Settings > Focus.

2. Tap Do Not Disturb.

3. Under Turn on Automatically, set Do Not Disturb to turn on automatically at a certain time, location, or while using a certain app.

From Use Do Not Disturb with Focus on your iPhone or iPad - Apple Support