On AC volts it doesn't matter which terminals you put your meter probes on.
Just put 1 meter probe on one, the other meter probe on the other and you should get 240 volts(When the oven is set to BAKE and 350 degrees.)
The relay on the right (that your arrow is pointing to in your photo) reads a very small amount of current with the oven off. Nothing while preheating and nothing after preheating is complete.
The other relay on the left reads a very small amount of current with the oven off. Reads 240V while preheating and 240V after preheating is complete.
I'm guessing that means the right hand relay is bad and the board needs to be replaced? That's great because it appears to be a simple task and the board is only $74. Much cheaper than a new range!