I'm on propranolol er 60mg for tachycardia, 2 right upper teeth need extracted, will the propranolol affect a dental local anesthetic or cause problems?

I am unaware of any interactions, but you should discuss this with your treating dentist.

Dr Malerman agreed

Depending on what is in the local anesthetic, the anesthetic and propranolol may affect one another. Because your dentist will know which anesthetic they’ll use, it’s best to alert them to your taking propranolol. They may use a different anesthetic, give specific, short-term propranolol instructions, or involve the doctor who prescribed you propranolol in propranolol dosage decisions.

Dr Malerman agreed