Download the file and unzip it. Move the FS22_BetterContracts folder into the modSettings folder under FarmingSimulator2022/
Take attention, sometimes there is a modsSetting folder too with double sS. You need to copy in the modSettings with single S.
This folder is in the same FarmingSimulator2022/ folder where your mods folder located.
I already made the folder structure, you just simple copy FS22_BetterContracts folder in it. So your path after that is somthing like this:
c:/Users/YOUR LOGIN NAME/Documents/My Games/FarmingSimulator2022/modSettings/FS22_BetterContracts/FS22_WestEnd/userDefined.xml
If it’s not clear, please read more times and try to understand, if you asking me I can’t explain better than this.