For concentrated spray, use up to 2 full bulbs of garlic pureed into half cup of water. Method.. Crush and put into a bowl. Pour boiling water over it cover and let steep overnight strain before putting into spary bottle
I agree with Mark. Looks like a mosaic virus (no cure leaves will turn yellow also) it is spread by insects mostly aphids. Fruit will be affected also. Best to remove affected plants and burn, disinfect garden tools used aswell.
Looks like caterpillers i would spray with diluted garlic juice. As for small fruit going yellow possibly due to not sufficient water, so plant takes moisture from the fruit.