To see Invoice in your fantasy recommend that your brain is distracted with monetary and cash matters. You might feel overpowered with life's requests.

To see bills in your dream suggest that your mind is preoccupied with financial and money matters. You may be feeling overwhelmed with life's demands.

To get a bill in your fantasy speaks to something that you have done is presently costing you somehow or other.

To receive a bill in your dream represents something that you have done is now costing you in some way or other.