How do you report hours that vary week to week? after 6 years as a sales associate

I picked up part-time shifts as a sales associate and I am confused about how to report them. I have read a lot of threads here and could not find my exact situation. The form asks for gross earnings, which I do not see until later. Who can I ask without risking my claim?

Thanks for writing this out. I went through something close to it 4 months ago, and it settled down once I kept a simple log of every call and form.

In my state the question was about the week I worked, not the week I was paid. Read the wording on your form carefully, or ask the claims line.