I am creating new droplate in digital ocean. If I create a droplate in Singapore region do I have to pay any taxes. Creating a droplate in India requires 18℅ gst.

Yes, although I have only worked with INDIA region droplets, but still they will charge 18% tax.

Use Vultr to save taxes.

Every country has its rule that follows to start a business. You can independently choose your place and way.

Yes yu can use vultr