looks like sunburn. Paint with diluted acrylic enamel white.. It will take about 60 days for that tree to get over transportation shock. Be patient for now.

Ahh okay I was hoping it was just sunburn. Will it recover once I paint it or will amputation be required?

Should be ok. Cut off the bottom two green stake ties. Will it stand on its own with no ties? If so, cut them all, they are for transporting.

While it is still shocky...I would re-pot that tree into a larger pot...or get it in the ground. Yes, young avo trees are very subject to sunburn. Consider shadecloth while small. Make sure you keep them well-watered...avos love water (not mucky however).

Thank you so much for your help and insight since this is my first experience with avacado trees. Oddly enough the fuerte tree didn't burn at all but the lamb hass burned like crazy =(