My tongue has felt numb for 3-4 wks. Looked at it close today and some buds seem swollen and some missing. Areas red too? What is that?

Geographic Tongue? Without actually examining you, we can only guess as to exactly what you have. However, one possibility is something called geographic tongue. As this is only a guess and not a definitive diagnosis, it warrants you actually seeing a dentist to giving you an accurate diagnosis, as there are many other conditions that it might be, some of them requiring treatment. Numbness is a concern.
Diagnosis. It sounds like it is time to have someone look at it and run some tests to give you a diagnosis. An oral surgeon, dentist, or oral medicine specialist should be able to help you.