Q.My Tomato Leaves Are Curling Under
Leaves twisting an curling under selves an branch slightly twisted

Certified GKH Gardening Expert
Many tomato cultivars will do this. Most of the time it is normal. Testing the soil can put your mind at ease.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
This article will help you to grow tomatoes to their potential:
https://www.gardeningknowhow.com/edible/vegetables/tomato/growing-tomatoes-guide.htm
Here is a free ebook on the subject:
https://blog.gardeningknowhow.com/ebooks/essential-guide-to-growing-tomatoes/