I was automatically registered with HMRC however i don't have the credentials from HMRC email , i have tried to connect my QB account without success.

The confirmation email can take up to 72 hours to arrive, edward-coversite.

Once you receive your credentials from HMRC, you can continue setting up your MTD for VAT. Here's how to connect your account:

1. Click the Taxes tab.
2. Select Set up MTD.
3. Hit Making Tax Digital and then click the pencil icon to show more options.
4. Select Learn how to connect.
5. Click Authorise now.
6. Hit Continue.
7. Select Sign in to Government Gateway.
8. Enter your Government Gateway details for MTD for VAT.
9. Click Give permission.
10. Select Continue.

Now that you're connected, you can now submit VAT return. You can pin this article as a guide: Submit VAT a return to HMRC. 

I'm just a post-away if you need help submitting VAT. Thans for dropping by!