I have a toothache can I come and get antibiotics and pain medicine there

Yes with a prescription

Yes

No you can not get antibiotics at Walmart and all they have for pain orajel to anbesol maximum strength liquid it will help until you go to a Dentist to get antibiotics

Is the over the counter pain medicines are Orajel , Anbesol, Kanka,, most likely store brands which are usually just as good

Antibiotics only if prescribed, but there are otc pain medications