does iPhone 13 mini has slot of dual Nano sim?

Only those sold in China, Hong Kong and Macao will have a dual nano sim slot.

Models sold anywhere else will have a single nano sim slot and an eSim.

Details here: link-> Using Dual SIM with two nano-SIM cards - Apple Support

Guess I took too long. Ooops.

Only if bought in China, Macau or Hong Kong. Everywhere else in the world, iPhone comes with one physical sim and one eSim.