Forgot my restrictions pass code

You lose data but you can restore it from the backup you make regularly.

Use Restrictions on your iPhone, iPad, and iPod touch = About Restrictions (parental controls) on iPhone, iPad, and iPod touch - https://support.apple.com/HT201304 - including what to do if you forgot the code (see also: https://discussions.apple.com/thread/7846481?answerId=31330560022#31330560022)

If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - http://support.apple.com/HT204306 - You can restore from a backup but that backup has to date from before you set the restrictions password.

Not that I have seen. Clearly this is set up with clever 12 year olds in mind. This is the 21st century and people are going to have to treat passwords the way they do the keys to their house or car (or even more carefully since you can pay a locksmith to break into your house).

Yes it will, so you have to find a backup from before you used restrictions.