That information is well documented in the Samsung Galaxy A13 5G A136 User Manual here.
[link|https://downloadcenter.samsung.com/content/UM/202201/20220112231205531/SAM_A136_EN_UM_OS11_111721_FINAL_AC.pdf|Samsung Galaxy A13 5G A136 User Manual|new_window=true]
To remove the Face Recognition data:
[quote]From Settings, tap Biometrics and security > Face recognition.
• Remove face data: Delete existing faces.[br]
• Add alternative look: Enhance face recognition by adding an alternative appearance.[br]
• Face unlock: Enable or disable face recognition security.[br]
• Stay on Lock screen until swipe: When you unlock your device with face recognition, stay on the Lock screen until you swipe the screen.[br]
• Faster recognition: Turn on for faster face recognition. Turn off to increase security and make it harder to unlock using an image or video of your likeness.[br]
• Require open eyes: Facial recognition will only recognize your face when your eyes are open.[/quote]
And to remove the screen lock password:
[quote]Set a secure screen lock
It is recommended that you secure your device using a secure screen lock (Pattern, PIN, or Password). This is necessary to set up and enable biometric locks.
1. From Settings, tap Lock screen > Screen lock type and tap a secure screen lock (Pattern, PIN, or Password).[br]
You can choose from the following screen lock types that offer high, medium, or no security: Swipe, Pattern, PIN, Password, and None.[/quote]
There are all your instructions for what you asked for.
If you don't know the password and your face isn't registered on the phone, that's a whole different question from what you asked.