My husband, 63, & fully vaccinated with 2 shots about 7 months ago, was in pharmacy to pick up meds, he was wearing n95 mask, said man on line, also masked, was coughing a deep cough, they were about 10 ft apart, now we are worried for covid , risk??

Based on this scenario, your husband should be safe. I am making the assumption that he was wearing his N95 properly fitted and sealed around his face and that the man coughing also had his mask properly positioned. That said, if your husband develops symptoms 3 to 5 days after exposure I would recommend he be tested for Covid to be certain.

Minimal, given distancing and masking as well. Monitor for symptoms, but it is highly unlikely that COVID transmission was possible in mentioned circumstances.

You husband is not at risk of Covid from what you described. He should take a booster dose to enhance the protection from the vaccine. Wish you good health!