Numerology Numbers 9991

I assume you are referring to the three name core numbers and the life path number.

There is more to a numerology chart than just those four numbers. The day of birth is also a core number, for example. The entire birth date, actually, so the various important cycles can be calculated.

If 9991 is all the information you have, a partial reading can be obtained. Learn about the energy the number 9 represents. Then consult the core numbers article for links to the three name core chart positions and the life path chart position. With those, you may get sufficient understanding to satisfy what you are looking for.

(Your own life path chart position is represented by the number 9.)