Thankfully Beko refrigerators are very reliable. The company did have some issues with a couple of older models. Thankfully, those problems are long gone. Top review sites and customer reviews agree that more recent Beko fridges are quite reliable and don't have any widespread problems to be concerned with.
Drops of water or ice on the back of your fridge are a completely normal part of your Beko fridge's design. They will run down the rear wall into a drip tray where they will naturally evaporate into the atmosphere.