Heyyy Hima Bindu..  

No, you do not have to upload any such things like the marks sheet or Aadhaar card. You just need to upload the scanned of your image , signature , and your left thumb impression. For more information regarding AIIMS MBBS 2019 form  filling along with steps , visit below link :

https://medicine.careers360.com/articles/how-to-fill-aiims-mbbs-application-form