How Can I Generate a Circular Qr-Code Like a Messenger or a Kik Code?

I will assume you want to use an existing standard instead of attempting to invent your own encoder\decoder.

Any 2D barcode can be intentionally damaged for esthetics if you crank up the redundancy used for error correction. 2D barcodes are designed to survive a certain amount of damage. Placing an image in the center and rounding the corners are both considered damage from the perspective of the reader. For round corners you can't use a barcode with orientation dots in the corners, like QR. You must choose a format that is oriented with a marker in the middle like:

MaxiCode