Hello @Lturner12
Since you mention that you're not getting heart rate, it sounds like your optical heart rate sensor isn't on/working. I suspect that you don't see a green light on the back of your Charge 6. The green light is the optical heart rate sensor and it's needed for sleep tracking and readiness scores.
The first thing to do is to check the Settings tile on your Charge 6 to see that Heart rate is turned on:
Rieko | N California USA MBG PE
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