How can I find my email password?

If the Password is saved on your iPhone, please go to How to find saved passwords on your iPhone

If you are trying to find the password for your iCloud email account to use on a third-party email provider, you will need to generate an app-specific password. Please head to Using app-specific passwords - Apple Support

I hope the above helps you with your issue, if I have misunderstood or you need any more assistance, please let me know!

Access your email service provider’s website and use their methods to get the password.

Have you tried the process in the article above?

How to find saved passwords on your iPhone

If it isn't there you will have to try and sign into your account in a browser on a computer and use the Forgot My Password process and hope you set up recovery phone number or alternative email.