I'm very new to spss so please excuse my total ignorance on how to do this.

I'm hoping someone can please help!
I want to prove a hypothesis- brand trust impacts positively on brand loyalty.

I have 6 questions for BT which were answered under a 5 point likert scale.
I have 10 questions for BL which were answered under a 5 point likert scale.

1 is strongly agree, 5 strongly disagree.

How on earth do I go about proving the hypothesis? I'm a complete beginner to spss and all tutorials/YouTube vids seem to only use one variable to prove theories. What test should I do, how do I get all variables down to one each, then go about doing test? Please please help a hopelessly lost person 😩