Here is the full list of all 24 Farming Simulator 19 trophies - there are 6 bronze, 11 silver, 6 gold and 1 platinum.
Collect all trophies
Complete 100 missions
Complete 50 missions
Breed 20 cows
Breed 30 sheep
Breed 50 pigs
Harvest 100 hectares
Fertilize 100 hectares
Cultivate 100 hectares
Sow 100 hectares
Harvest 10 hectares
Fertilize 10 hectares
Reach 10 hours of playing time in a single savegame
Fertilize 1 hectare
Cultivate 10 hectares
Sow 10 hectares
Breed 100 chickens
Cut down 25 trees
Cut down 1 tree
Own a bank account with 10 million ingame money
Complete 1 mission
Sow 1 hectare
Cultivate 1 hectare
Harvest 1 hectare