Many people think the fruit was an apple but this is wrong.
The Hebrew Bible doesn't specify what type of fruit Adam and Eve ate.
Nobody knows because the Hebrew Bible just says "fruit."
www.livescience.com
-
The first mention of a type of fruit in the Bible.
“And the eyes of them both were opened, and they knew
that they were naked; and the sewed fig-leaves together,
and made themselves girdles” (Genesis 3:7).
It’s this biblical mention of fig leaves that has led to a theory
that the forbidden fruit itself may have been a fig—that the
leaves were from one and the same tree.
Adam and Eve’s “fig-clothing”. The Hebrew word used for
“girdles” in Genesis 3:7 is hagora, literally a “belt.” Broad fig
leaves would have been akin to the typical tribal loincloths.
The earliest-discovered cultivated fruit is the fig.
It's labeled the “earliest known cultivated fruit crop,” and “perhaps the first
evidence anywhere of domesticated food production at the dawn of agriculture”
Scientists have found what may be the first evidence of domesticated food production at the dawn of agriculture.
www.nytimes.com
Figs are mentioned in connection to “fallen stars” Isaiah 34:4
a parallel New Testament verse, Revelation 6:13).
The pomegranate is another fruit often associated with
the two trees of the Garden of Eden. This fruit may be a fit
with the tree of life; the tabernacle and temple were heavily
decorated with carvings of pomegranates (Exodus 39; 1 Kings 7).
Whatever the case, it is generally agreed that the forbidden fruit
could not have been an apple.