Here's the default button layout for accentcore( and any other gg)
X-K
[](square)-P
triangle-S
0-HS
R1-D
R2-taunt/respect
and, if your confused about all the numbers, those are the directions you have to input. Just look at your numpad. For example, 236 is a quarter circle forward, 623 is a shoryuken/dp motion, 7,8,9 is jump, etc.
You should try to read the accent core guides, and learn about system mechanics and such. You might want to play around with every character too, since robo may not be your thing.