No problem at all @mansi1695, happy to help.
In this instance, I would say the request form is still the best way of moving forward with what you are looking to do. Currently, it would be the only way to get in touch with the team who work with Shopify Partners or Experts about building SDK payment gateways of any kind. The reason for this is because a ccess to the Hosted Payment SDK is limited so if you want to build a payment gateway, then you'll need to be granted access to it first and the request form would be the only way to do that.
I have also moved your post to the Shopify API and SDK board where it is more appropriate and will get better eyes on it.
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