He is not a kid, follows with his own doctors and specialists, and yes it is high.

A lot depends on how much exercise you normally get, how much caffeine you take, whether you’re on thyroid hormones, ADHD meds, or beta blockers, etc which can affect heart rate. Comparing walking HR is difficult because level of exertion might not be equal so will look at resting. BTW normal resting HR is 60-100

My husband’s resting heart rate is mid 40’s and dips to 30s when he is asleep. He is extremely muscular and has had a full cardiology work up.

My resting heart rate when I was on too high of a dose of Synthroid was in the 90s. Now that it’s much less and appropriate, it went down to mid 70’s, and then they started me on beta blockers and its about 60.

Son on ADHD meds and Synthroid, not muscular at all/doesn’t exercise, runs 100-120 resting heart rate.

A lot of factors affect heart rate.

Just warning you to not get your hopes up. Occasional single PVCs are not at all uncommon and most docs won’t work them up. If you are symptomatic, which you say you are, stress that. Feeling palpitations can be annoying, but in general, not harmful. More frequent PVCs that are strung together could be more of an issue. Some people have trigeminy or bigeminy etc which are PVCs at regular intervals of every 3 or 2 beats…and some have V Tach–basically all PVCs. Some have symptomatic and some asymptomatic, but don’t want to be in V Tach and that requires medication and or cardioversion. Broad strokes here, not medical advice.

You’ve been to cardiologists, per your post, and I assume you’ve been cleared. They can prescribe something called a ZioPatch which does a 2 week monitoring and you can press the event button if you feel any symptoms, so that they can correlate those to the rhythm at that moment. Check with insurance. Mine was covered.

I would advise you ask your question in r/medicaladvice for other opinions.