Can I keep cut fruit in the fridge for more than 2 days?

It really depends on the type of fruit! Most of them last 3-4 days no problem if you keep them in an airtight container, but some like strawberries or melon get a bit soft after 2-3 days. The important thing is that you keep them well covered so they don't dry out.

Which one are you thinking of storing? In general most cut fruits last between 3 and 5 days in the fridge if you store them well in a sealed container, but things like melon or watermelon get soft quickly. The important thing is to keep them in an airtight container so they don't oxidize or dry out, and if you see they start to smell weird or look off, better throw them out.