Welcome to Librarium Online!
So the standard boyz come with a choppa and a slugga, (hence gain +1 melee attack)
is that included in there profile (2 attacks)
or do they have 2 attacks base (then adding +1 for a total of 3 if they use there slugga and choppa's instead of trading for shootas)
Boyz have 2 attacks base. If they have sluggas and choppas, they get an additional attack for that; so 3 total. 4 on the charge.
However, you will want to equip your Boyz with Shootas - at least with the current edition of the basic ruleset. I for my part have stopped working on my Horde until the new rules are out and I have playtested a couple things.
"Fear not and look up to the sky for salvation, for we have entered orbit."
Blood Angels 2nd Grail Guard Company
That's not to say I don't think shoota boys have their place, but when it comes time to get stuck in (which you will be aiming for in nearly every scenario) the extra attacks are vastly superior.
Also note the extra attack gives the ladz some extra staying power, something they desperately need in any close combat they don't dominate the first round of.
Don't bother having anything more than meaningless small talk on this forum, the moderators won't allow it