I will assume that your question about the usage of funds at Earthshot is genuine. The actual prize is actually listed as the second strategic pillar in the impact report that is on the website that I linked.
The first strategic pillar is "To be the leading global engine for discovering, accelerating and scaling Eco-Innovations."
For example, when Charlot Magayi expanded from her home country of Kenya and entered the Ghanaian market, she needed help with international trade, supply chain & logistics, research & development to adapt her briquette fuel source to the Ghanaian market, etc. The costs alone would be prohibitive to expand, but Earthshot supported this entire expansion process. While some advisors donate services, others do charge a lower charity rate which Earthshot picks up, hence the spend.
I encourage you to listen to the brilliant Charlot Magayi herself.