Are you referring to passwords that you've saved for specific apps or when you're using your search browser?
Assuming you're using the Google Chrome app as your default search browser: Open the app> tap on "settings"> then tap "password manager" there is where you can check every password you've made for sites visited in that app.
Or assuming you're using Samsung pass (this requires a Samsung account and for biometrics to be enabled)
Open the Samsung pass app> under "sign-in info" tap on "apps/websites" this app also manages what apps and sites you've created while signed into your Samsung account. Generally if you install a new app and sign into it Samsung pass will ask if you would like to save that info.
