Do you know if you are supposed to even have a 2018 1099-INT or not? Or do you know you were supposed to get one, but the one you were expecting didn't come in the mail?
A bank doesn't have to send a 1099-INT if the amount was less than $10, but you still have to report the interest even if below $10.
If you have online banking with BOA, you'd have to look in your account to see if you were paid any interest, and if so, whether they allow people to download a 1099-INT from a tax forms section.
Or if you don't know if you were supposed to get one, phone your BOA customer service and ask them.
