Hello Sivakrithika,

As you have mentioned that you have applied for TNEA counseling. Now after getting 12th board result, you either do not have to upload the marks nor it will automatically be uploaded. So what you need to do is, before you go for the counseling take the print out of the result and take it with you. Although if you could attest that printout of your result through some gazetted officer or principal of your school, it would be better. However, if you couldn't attest it then take it without attested. 

Also, keep checking the official website of the college. Sometimes they ask for your board results before the counseling starts. However, that's very rare. 

 Hope you find the information useful. Have a great future ahead.