my Iphone SE says "iphone is disabled for one hour for not knowing password?

It's the passcode you've set to unlock your iPhone.

You are the only one who supposed to know it.

If you can't remember it, follow the directions from the article below:

If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support

If you're talking about the passcode to unlock your iphone:--> If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - Apple Support

If you're talking about your Apple ID password:--> If you forgot your Apple ID password - Apple Support

If you're talking to something different, please better explain your needs.

Regards

Giulio