What is the typical referral fee for introducing clients to venture capitalists?

After spending nearly ten years in recruitment, I’m currently broadening my network and have connected with a significant number of venture capitalists seeking new companies and projects to partner with.

As I navigate this new territory, I’d like to gather thoughts on whether I should charge a “finder’s fee” or “referral fee” to the client, the VC, or both. What is the standard practice in this industry?

I would greatly appreciate any insights you can share. Thank you in advance!