There will be situations where parents have not earned respect and honour as they have not loved and protected their own as YaHuWaH instructs. One aspect of honouring flawed parents is to understand that the best way you might be able to honour them is from a distance, emotionally and physically. You can give yourself permission to do that.
To give them honour means showing (not necessarily feeling) respect, letting them know you are listening and considering what they say (and it does not necessarily mean following through!) To give them honour means being civil and kind in your dealings with them. It does not mean trusting them. It does not mean placing yourself in harm’s way. It means forgiving them, so that you are not carrying and paying for the emotional baggage of their treatment of you. And please remember that forgiveness is given, but trust is earned, so it’s entirely possible that you can release the woundings you sustained from them without ever, ever trusting them with your heart because they don’t deserve your trust.
Honouring flawed parents means you have healthy boundaries so that you know where you end and they begin. It means you learn how to protect yourself so that they can’t steamroll over you; it also means you have realistic expectations about what they can and cannot give you or do for/to you.
To honour our parents means to be thankful for their existence and to respect their actual role as givers of life in the sequence of human existence. Of course in order to honour them in this way we need to be thankful for our own existence too but, we also will usually need to have pity on them. For even if they are good people, it is almost always true that they have been quite wrong in many respects, and possibly still are...