Hi Jasmine, did you grow them in bags, in she soil?
For best results, just plant the tomatoe plants directly in the soil. The plants should have a free root system. Don't use any chemical fertilizers, use organic fertilizers like manure, compost, kelp meal, liquid seaweed fertilzer, liquid fish fertilizer and so on.
It's not to late to plant some more plants.
Use a cedar stake and tie the plants to the stakes with old nylons that are cut up. (They work way better than gardening tape or string (that cuts through the vines). ) If you have semi derminate or indeterminate plants use 6 foot high stakes.