Canned fruit is healthy although it's not the healthiest due to the higher sugar content and syrup contained in the fruit.
A lot of canned fruit contains artificial sugar and syrup to make the fruit taste good and to preserve the fruit in the can.
Still though yes canned fruit is better than eating no fruit and you can make the canned fruit healthier by rinsing off the sugar and syrup and draining the syrup from the canned fruit as well.
That will also reduce the calories and carbs from the canned fruit but still even then with the sugar or syrup on the fruit the canned fruit is still pretty healthy.
So if you can only eat canned fruit and don't have much access to fresh fruits without being in the can then at least you'd be eating some fruit which is better than eating no fruit.
Still if possible try eating some fresh fruits such as from a tree or garden.