Just place the sign somewhere, right click on it, then it gives you 64 apples.
Note: Minify the command to avoid issues :)
Free Food Command Sign
THE BEDROCK BREAKER
The Ultimate Killing Sword
The killer sword
Diamond Gear { one sign }
Hologram Text
Kill sign
Happy BirthDay Card
brilila9891
brilila9891
natemasterninja
iexplosiveking
mysticspyralman
cyarith