Trending @Capgemini; Seeking Advice on Project Deployment and Career Impact

I have recently been deployed to a project as a developer, which primarily uses older technologies like Struts, java. The project itself has been running for a long time, with its first commit in 2000. Since this is my first project, I am feeling a bit uncertain about the impact it might have on my career, especially as I plan to switch company within a year. I am not sure whether staying in this project would affect my future opportunities or if it would be better to reject it and remain on the bench. I need guidance on what to do in this situation.