Welcome to the forum, mlundbl2!
This behavior usually indicates anal glands that are not discharging normally. It's called "scooting". The fluid in the anal glands is usually released when the cat has a bowel movement. Sometimes the problem is as simple as BMs that are too soft or too firm. But sometimes the anal gland ducts can become plugged. The cat normally cleans off extra anal gland discharge by licking, but excessive licking may be a sign that the cat is experiencing discomfort in that area and trying to do something about it, as is also the reason for the scooting.
A veterinarian can release the fluid in the anal glands by a procedure called "expressing". If there is a medical reason for the problem, then this may need to be done periodically.
There isn't any immediate health crisis for your cat, but you should have this taken care of soon, because if it's not, then the problem can become much worse.