How much time Infosys takes to release offer letter?

I have cleared all technical rounds, on 12th June I had HR round also. HR asked me to share all past company release letters and graduation marksheets. I have shared all the documents. HR also confirmed my package over the teams call and assured that he would send the offer letter. But after that 6 days have passed, I have neither received any communication, nor have I received any offer letter. Typically how much time will they take to release the offer letter?