If you've forgotten your password, you can reset it from the login screen.
Steps
Open the Signal login page.
Select Forgot Password.
Enter the email address associated with your Signal account.
Check your inbox for a password reset email.
Click the reset link and create a new password.
Return to Signal and sign in with your new password.
Didn't receive the email?
Check your Spam or Junk folder.
Ensure you entered the correct email address.
If you still can't find it, contact Support(support@busha.co).