<View>
<Image
source={yourImageUrl}
resizeMode={'cover'}
style={{
width: 300,
height: 300
}}
/>
<View style={{ position: 'absolute', top: 0, left: 0, right: 0, height: 300, alignItems: 'center', justifyContent: 'center' }}>
<Text>Your overlay text</Text>
</View>
</View>