Hello Osaiga,

this is IMHO the best paper validating a scale:

Antonakis, J., & House, R. J. (2014). Instrumental leadership: Measurement and extension of transformational–transactional leadership theory. The Leadership Quarterly, 25(4), 746-771. doi:https://doi.org/10.1016/j.leaqua.2014.04.005

I have a paper that is much simpler and also provides access to an annotated R mardown file which shows the procedure in R/lavaan which is contained in this thread:

https://www.researchgate.net/post/Model_fit_measures_in_CB_SEM

One important recommendation: Avoid AMOS. As the example in our paper shows, you need access to specific information that AMOS does not provide.

HTH

--Holger

Dear @Felix below thread on Research Gate would help your cause.

https://www.researchgate.net/post/What-steps-would-you-recommend-in-scale-validation

teps in scale construction include pre-testing the questions, administering the survey, reducing the number of items, and understanding how many factors the scale captures. In the third phase, scale evaluation, the number of dimensions is tested, reliability is tested, and validity is assessed.