Statistical technique to assign weights

Hello team. I have a statistics-related problem that I was working on as part of my project at work. I was wondering if someone could help me out here!
I am trying to calculate a software delivery score for our department’s software pipelines (some metrics included: % Automated Deployment, %Test Coverage, % Rollback, etc.). I am planning to have a weighted average software release score. The end goal is to project these scores for individual leaders and influence the respective engineers to work towards increasing the score. However, I am not sure what statistical techniques I can use to assign weights to these metrics and decide a threshold. Can someone please help me with the same? For E.g., Weighted sum = W1*{Automated Production Deployment%} + W2*{% Rollbacks} + W3*{%Test Coverage}.