MVP Question

I’ve been working on creating a website for some time, and it’s designed to achieve three main objectives. Two of these focus on attracting attention, while the third is what truly sets it apart—it solves the core problem. I’ve made significant progress, with the first part about 75% complete. However, I’m uncertain about when to consider the MVP ready. Should I focus on finishing the first part before moving on to gathering real customer data and using it to refine the MVP and draft a business model? Or should I prioritize something else at this stage? This is all quite new to me, and I’d greatly appreciate any guidance or advice. Thank you in advance!