Adding characters as a data labels in Barplot

Question

I’ve a variable named as Hours_taken, and made a frequency distribution, which is Ramit_data, portrayed below.

Ramit_data

x     freq
1.1-2    1
2.1-3    4
3.1-4    6
4.1-5    4
5.1-6    2
6.1-7    3    

I’m now making a Barplot by the Ramit_data which is looking like below

barplot(Ramit_data$freq,ylim = c(0,7),col = rainbow(6),main="Hours taken by stores",xlab = "Count")

However I want this data to be showcased along with the frequency as a data labels above/within bars.

Note- Data labels design is not required as I’ve just shown what I wanted, hence any help is appreciated.