here are some top journals where you could consider submitting a paper on directed acyclic graphical (DAG) models:

Journal of Machine Learning Research (JMLR)

Journal of the Royal Statistical Society, Series B (JRSS-B)

Journal of the American Statistical Association (JASA)

Biometrika

Annals of Statistics

Journal of Computational and Graphical Statistics (JCGS)

Computational Statistics & Data Analysis (CSDA)

Journal of Causal Inference

Statistics and Computing

International Journal of Approximate Reasoning

IEEE Transactions on Pattern Analysis and Machine Intelligence (TPAMI)

Journal of Artificial Intelligence Research (JAIR)