Welcome to basics about “scoping reviews”

Some Basics delivers the section at https://en.wikipedia.org/wiki/Systematic_review#Scoping_reviews

There a link offers you the PDF to an older – 2005 - but still important academic article
 „Scoping studies towards a methodological framework, published in International Journal of Social Research Methodology: Theory & Practice 2005 See also https://www.tandfonline.com/doi/full/10.1080/1364557032000119616 

Already one of the best scoping review on the topic of animal advocacy is: 

Harstad, R. M. B. (2024). The politics of animal welfare: A scoping review of farm animal welfare governance. Review of Policy Research, 41, 679–702.  https://doi.org/10.1111/ropr.12554   = https://onlinelibrary.wiley.com/doi/10.1111/ropr.12554