Looking at the strength checker it looks like it could be 5-7 power ups of varying magnitudes. In episode 10 alone it's remarked several times that Goku is getting a better handle on SSJG.
As for the second part I'm not sure. Beerus was lying about using 100%, but I'm not sure if he was lying about needing 100% to nullify Goku's attack. I doubt he displayed more power after that, it seemed like he was merely stronger than be was 5 minutes ago:
Episode 13
Time: 14:19
Context: After Beerus powers up
Goku: “Beerus-sama, you really are awesome. The power of your punches is way different than it was five minutes ago!”
Beerus: “Your power has gone up, too, hasn’t it?”