In general, it is not recommended to bring a 2 year old to a Broadway show. This is because the shows can be long and loud, and it may be difficult for a 2 year old to sit still and pay attention. Additionally, the themes of some shows may be too mature for a 2 year old to understand.
If you do decide to bring a 2 year old to a Broadway show, be sure to prepare them in advance. Talk to them about what to expect, and make sure they are comfortable with sitting in a theatre for a long period of time. You may also want to bring some snacks and drinks for them, as well as a change of clothes in case they get wet or dirty.
Overall, it is up to you whether or not you want to bring a 2 year old to a Broadway show. Just be sure to weigh the pros and cons before making a decision.