Does it matter what furnace the player opens? Or do you want to detect if a player opens any furnace in general? I'll provide a solution for the latter, let me know if you need the other approach.

1.12.2
Prerequisite
/scoreboard objectives add Furnace stat.furnaceInteraction
Clock Commands
/execute @a[score_Furnace_min=1] ~ ~ ~ say hi
/scoreboard players reset @a[score_Furnace_min=1] Furnace
1.13
Prerequisite
/scoreboard objectives add Furnace minecraft.custom:minecraft.interact_with_furnace
Clock Commands
/execute if entity @a[scores={Furnace=1..}] run say hi
/scoreboard players reset @a[scores={Furnace=1..}] Furnace
Obviously the "say hi" commands should be replaced with whatever you want. I hope this helps!
~SUPERIONtheKnight

Yes, I also tried to open the oven, but I can not do anything. Where can we find papercoach help? what player can do it? Try to help the tips below and later write from this what happened.

Yeah, I'm trying to figure out how to run a command when a player opens a certain furnace.

What is your goal with this? Just to run a command when a player opens a furnace, or to activate a door or something?

You are not able to do this directly, but you could use a comparator to tell when an item is put in / taken out of a furnace. A more complicated, but wireless, method would be to use a scoreboard objective to track the "use furnace" statistic, and check when a player within a distance of an armor stand (invisible, on the furnace) clicks a furnace.

It is impossible to find a player opening a furnace, exempting the use of command blocks of course. However, it is possible to find items in a furnace using a comparator, so if you are attempting to make a trap which occurs when a player tries to take items from a furnace you could use a comparator through a block and attach it to an inverter, or activate the trap by placing items in the furnace by subtracting the inverter from the contraption.

Maybe use a comparator? I don't know if that works for just opening a furnace but it's worth a try to look up what red stone comparators can do. I use them with hoppers and command blocks and they're super useful!