http://iscoresports.com/

I am new with this app and have a questions about viewing a game from the computer. How will friends and players parents be able to view the game on the computer? Do they have to have a password username and password or how does this work? Thanks

You will have to enable "i-Scorecast" on your device so that the game is being sent to the iScorecast servers. You will then send them your Customer ID (shown on the iScorecast screen and the Options screen in iScore on your device). They will then go to http://iscorecast.com" onclick="window.open(this.href);return false; and type in your Customer ID, and they will then be able to choose from the games scored by you.

Will giving friends and players parents my ID allow them to mess-up anything or change anything that I would not want them to or does this just give them access to view the game?

Only access to view the games. You are the only one that can create the games through the iPhone or iPod Touch.