If I have swift attack, two weapon wielder, and ambi dexterous and are fighting with 2 swords, one in each hand, how many attacks do you get per round?

Nile said:

3, so long as you choose the the appropriate action in combat.

Two of those attacks will be with one weapon, as per the Swift Attack rules. The weapon in your other hand grants an additional attack thanks to Two-Weapon Wielder (Melee), and all those attacks suffer a -10 penalty (instead of a -20) due to Ambidextrous.