Should I consider investing in Reliance as it is already so high (expensive)?
My suggestion would be to avoid, for now, if you want to invest.
There is a high chance that the market will come down, as this pandemic is not done, and cases are still heading up, at that time you might get some opportunities to buy it cheaply.
I recommend doing some research before investing, if you want to know more about the company, you can read the fundamental research on it;
I hope it helps,
Do and share