I am a physics student, and I am working on my final year project, I am planning to simulate polymers using cellular automata. I am really struggling with this project, if someone can give me any indications, I am going to be glad. Thank you.
Eventually, the question should be more detailed.
However, for starters and in general, I would start by giving a cursory read to any wide piece of work that contains this problem, in order to get some perspective. For example in the PhD thesis Cellular automata methods in mathematical physics, where chapter 5 is dedicated to Modeling Polymers with Cellular Automata but there is some background that should help you get situated, such as Cellular Automata as models of nature or the question of reversibility vs dissipation. It's 25 years old but the general principles will not have changed.
Once you have a good grasp on the general problem you want to solve, the system you are going to study and why the technique you want to apply can be useful, you can dig into the bibliography with some more focus, and also to select more recent works.