We just planted these last weekend (tomatoes, peppers, cucumbers) and they are getting these white spots on their leaves & some leaves have started to shrivel. The cucumbers are the worst looking.
Is this from to much sun or water or fungus??
Any help would be appreciated so that we can treat it properly. Thank you!!

Probably just transplant shock. Green house grown and not sufficiently hardened off. Probably grow right out of it as they adapt to the elements. If whole leaves start turning white ( sunburn or windburn) some temporary shade may help.

I agree - it looks like sunburn to me. Easy way to "harden off" (or, more correctly, avoid the hardening off process) your young plants is to cover them with floating row cover (sold as Reemay, Agribon, GrassFast, and other names; it's a nonwoven, lightweight covering that allows light and water through). Be sure to give it some slack when you lay it over your plants, and pin down the edges with garden staples. Provides some protection from both the sun and wind and gets things off to a good start. As FarmerDill said, your plants will likely kick out new leaves soon that won't be so tender, and everything will be fine.

Welcome to NGA, @hwrights -- I hope you have a great gardening season!

Ok! Thank you both so much!!
I'm sorry I'm just now seeing your replies. I didn't get a notification for some reason.
Thank you!

Yup, I agree too much sun. They will grow out of it as they acclimate.