need to Remove the previous owners iCloud account but do not have the password. iPhone SE

You will need to contact the previous owner. There is no way to bypass activation lock without the assistance of the previous owner. See: Turn off Find My iPhone Activation Lock - Apple Support

If you purchased the device through a 3rd party (e.g., eBay) and you cannot get assistance from the previous owner then you may want to try to get a refund via the 3rd party since the iPhone is useless without that assistance.