Known issue with replacement screens. The connection for the home button through the screens are utter garbage. Keep trying different screens. If the button works OK with the original screen then nothing wrong with the button. If you're buying specific se 2020 screens then try an iPhone 8 screen. They're the same. Or buy a genuine 'pulled' screen for more money. 7's, 8's and se 2's are a nightmare lately for garbage replacement screens coming out. Seems there's no quality control in China anymore.