I planted a hybrid tomato plant and now it looks wierd. Can someone tell me what's going on? Thanks

Looks to me like fusarium wilt. This is a fungus that is soil borne. It may have come from the soil the plant was grown in or from your own garden soil. There is no cure and it is best to rouge out the plant and destroy it. Prevention is the key. Proper soil pH, consistent watering, avoid water splashing soil onto the plant. A good mulching program is the best growing method. A layer of mulch between the soil and the plant leaves helps. My personal choice is layers of newspaper on the soil covered by 6-8 inches of straw on top. There are many other mulching programs.

You plant will die quickly if it is indeed fusarium wilt.

Honestly, I am not exactly sure of what it is because of the color of the spots. Maybe I could give a better guess if I knew more of the back story. But I would say it is a fungal or bacterial infection.The bacteria is Clavibacter michiganensis is a possible cause, and it survives in plant tissue. There is not much you can do besides sanatizing equipment before you use it. Also next season till areas of the garden where tomatoes have been grown to break up the decaying of old plants.

Hmm we are doing for the first time a raised bed and using new mixture of miracle grow garden and potting soil. If this is a certain fungal infection what stuff can i buy to get rid of it if possible