0:00 Each Time I Win, The Kamehameha Gets Stronger In Dragon Ball Xenoverse 2
0:11 Kamekameha
3:23 Demon Ray?
5:02 Bending Kamehameha
7:34 Burst Kamehameha
9:41 Divine Kamehameha
11:52 Kamehameha Boost
14:14 Kamehameha
16:40 Big Bang Kamehameha
17:45 Kaioken Kamehameha
19:58 Majin Kamehameha
21:53 Super Black Kamehameha
23:49 x10 Kamehameha
25:26 Scatter Kamehameha
28:28 Super Kamehameha
30:27 One-Handed Kamehameha
33:10 Warp Kamehameha
34:27 x20 Kaioken Kamehameha
35:55 x4 Kaioken Kamehameha
37:55 Super Black Kamehameha Rose
39:27 Final Kamehameha
50:49 x100 Big Bang Kamehameha
41:59 Breaker Energy Wave (Angry Kamehameha)
43:43 One-Handed Kamehameha mk2

This is how much damage each Kamehameha skill does as a level 120 Saiyan CAC with neutral stats. I wanted to test this with neutral stats so it's fair across the board. You can make each of these skills much stronger by using the proper Awoken Skill, Super Soul, QQ Bang, stats and build in general.

Kamehameha Boost - 4,453
Kamehameha - 4,557
Bending Kamehameha - 3,632
Kaioken Kamehameha - 5,497
x10 Kamehameha - 7,259
Kamekameha - 2,575
Big Bang Kamehameha - 5,152
Burst Kamehameha - 3,975
Divine Kamehameha - 4,416
Demon Ray? - 2,693
Majin Kamehameha (Android 21) - 6,180
Super Kamehameha - 7,962
x4 Kaioken Kamehameha - 9,133
x20 Kaioken Kamehameha - 8,902
Breaker Energy Wave - 11,804
Scatter Kamehameha - 7,844
Perfect Kamehameha - 10,102
Final Kamehameha - 10,765
x100 Big Bang Kamehameha - 11,229 (13,171 rotated)
Warp Kamehameha - 8,890
One-Handed Kamehameha mk.II - 13,015
One-Handed Kamehameha - 8,423
Super Black Kamehameha - 6,323
Super Black Kamehameha Rose - 9,358