How do I put a value on my startup?

Hi guys,

I'm the founder of a crowdfarming platform in Africa built without code, we just started a month ago and have already collected 15000$ from e-farmers.
Investors have started to approach us, they want to invest in the company for equity.
How do I value the company?
I'd love to get your thoughts.
www.shoraweze.com

Thank you,