Kristy Dixon , There are quite a few different models of RCA tablets. You can do a factory reset on your RCA tablet if you forgot the password, warning you will loose all stored data on device. Use the links below to see how to factory reset RCA tablets. Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
https://www.youtube.com/watch?v=ttvFDFqH5r0
https://www.youtube.com/watch?v=6jZEUzGhvP8
http://visihow.com/Android_tablet_locked_and_I_can't_remember_my_Google_email,_user_name,_or_password