GST Tax rates and its amount are not getting pulled up in quotations

I have followed below youtube video to set up the gst.

I have done everything as per the video. In the quotation after selecting the sales tax templates, the gst rate and amount is not getting fetched. I have updated gst rates in item.

Right now, I get the following screen without tax rate and amount:-

In the account setting, I have allowed to fetch item tax.

Did I miss anything?

Could anyone help me to sort out the issue?

Have you entered Item Tax Template in your Item?
Please post screenshots of Item tax Template

@Manan_Shah Thanks for your assistance.
Please find the screenshots below:-

Hope this helps.

Please find the customer screenshot below:

Did I make any mistake?