how do i sign up for covi 19 shots?

You pay attention to your local news for details to know when your age group will be called and to where this will take place.

You wait.  They will get to you when they have the shots.  Right now, they are very low on supply. Considering EVERYONE has to get it you are a long way down in Importance pecking order.  Doctors & front line workers get it first and then the old people second as they will suffer the worst if they catch the virus (most likely die) and then they work backwards on the age scale.  Your Doctor would be the one contacting you.    "IT IS TIME"    ("no, no, it is not my baby")   

.  or  "your cheeseburger order is ready"

Too bad it did not come in a BEER.

Medical care suppliers: Find supplier enlistment data for regulating the COVID-19 antibody.

You don't. You contact your doctor. If you don't have a doctor, you contact your county or state health agency  and ask them where they are conducting immunizations

First, you wait until your county gets to your tier, which may take a few months.  Then you sign up on the website for your county.  (They are each separate; there is no central signup for the whole country.)

You don't. You contact your doctor. If you don't have a doctor, you contact your county or state health agency  and ask them where they are conducting immunizations

Yes, they're doing it down at the Amtrak station right now - hurry.

Not on here. My county has a website to do so.

Contact your health care provider.