Go to your Wix site design tab
From the left side, click on the Add Elements button and select the Embed HTML option
Go to Youform and select your form in dashboard then click on the Share tab
There, you'll have all the embed codes. Select whichever one you want (I'll choose the Inline Embed)
Copy this code and go back to the Wix
Paste it into the popup in Wix which says "Add your code here".
Once done, you can adjust the height and width by dragging the embedded form
That's it! Your Youform should be live on your Wix site.
You can also check a sample Wix site below. If you need more help please contact support.