Nebula says:
How does the attributes synergies with the skills.
For example having high charisma, does it help manipulation?
In the same line of thought does, strength helps close range attack?
No. There's no synergy between attributes and skills.
The game's rationale is that you can be strong but clueless about combat, highly charismatic but so shy that manipulation is inconceivable to you, or really smart but not able to "connect the dots" as per perception.
So task rolls will either be attribute checks or skill checks, never both.