How do I see Party chat history messages ?!

I am sorry but unfortunately each party is its own unique instance, where messaging and everything in that instance is ended when the party is ended. If you know who abused your son in party chat please immediately report the account for bullying and the
person will be dealt with accordingly. My strongest suggestion is to encourage your son to immediately report any of the abuse because Xbox has a zero tolerance toward it.

n people report me cause I reply to their message or I kick them out of my party chat n they can talk smack n not get it but I don’t reamly do it n they do it a lot and I don’t see how this is fair

the Xbox app doesn't really support parties but support party chats. party chat is a message you send to your friends who want to join your party.

here is how to work it. creat a party and located at the top is says invite select your friend who you want to invite they should receive a message all they have to do is click it and they will join.

Hello

Party problems?

You can start an Xbox LIVE party and invite up to seven friends to watch a movie, play a game, or just chat online. For information on how to start a party, see Xbox LIVE messaging,
chat, and parties.

If you’re having problems with an Xbox LIVE party, try the solutions below.

http://support.xbox.com/en-US/xbox-live/connecting/xbox-live-party-help

I am seeing the same I have had to delete all my messages to view them again.

The Chat/Message system is getting a bit messy.

There is

•Normal Messages

•Message Requests

•Chats that are used to form Groups

Messages and PC Party Chats