I want to sell my Iphone 6s. It’s not letting me delete all of my personal information without my password. I got locked out of my account and hve not been able to get back into it. Is there a way to erase my information without my password?

Password or passcode? There's a huge difference.

iCloud: Activation Lock - http://support.apple.com/kb/PH13695 - This is a security feature so only legitimate (i.e., not stolen) redistribution of devices is possible. See: Turn off Find My iPhone Activation Lock - https://support.apple.com/HT201441 - If an activation lock was put on a device, only the owner of the account that applied the lock can remove it.If you forgot your information for this go to http://iforgot.apple.com/

Device lock: If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled - https://support.apple.com/HT204306

iCloud: Activation Lock - http://support.apple.com/kb/HT201365 - This is a security feature to deter re-selling of stolen devices. Apple is pretty strict about unlocking phones unless you can prove you are the owner. Passwords have transitioned from being casual things to log into a bulletin board somewhere to things representing thousands of dollars in investment.

You can call your local Apple Store ad see what they will require to do a reset, but remember even the FBI couldn't get Apple to unlock an iPhone for them.

You will have to enter it, or reset it, or the phone is useless unless the original purchaser takes it and the original sales receipt and ID to an Apple Store for a reset.