Hey @SanchitB23 !
We recently announced the ability to have the netlify drawer on branch deploys: QA and collaborate on branch deploys using the Netlify Drawer
Where supported, your main branch will also have this capability. So, by enabling that feature for branch deploys, you’ll find the Netlify drawer by opening your branch URL. On the left panel for the Netlify drawer you’ll see a “QR Code” link in the “Share” section. That is one way to get a QR code for sharing your main branch.