What are you trying to achieve? Higher ABV, or a beer that has some aroma and taste of honey in the background?
If the latter, you will assassinate any residual honey character by adding the honey at over 100F. Ish. Add the honey into the fermenter.
Unless you’re just using it as a sugar addition, in which case any time will do.
And again if you’re looking for actual honey aroma and flavor, you want raw, unpasteurized honey, not the typical store bought kind.