depends on how well it was made, i assume quite well if it was store bought. .25ml was enough to get me high for 3-4 hours from stuff i made myself. I used 5 grams to make mine and it was dissolved in ethanol, cant' remember how much total there was but probably 20ml. Really a few drops was enough to notice something. It's not a bad high either, kind of prefer it to smoking it.
i'd start with .1ml and work your way up or down as needed. Since it's honey oil i assume it's a liquid but if it's not you can dissolve it and dose it out that way. I also took mine sublingually which seemed to work better than just oral use.
since you have a gram, we can do some calculations to figure it out. Average oral dose of cannabis .5grams, lets say 20% THC and friends. So if your oil is 99% or so (unlikely but could be in the 90s) then you should get 100mg per dose, so 10 strong highs for your 1 gram. My math may be off i'm tired but either way you're just going to have to sample it, start low and see where it gets you.