What is the value of a US 2 dollar certificate in perfect condition?

Regardless of the bill's condition, it's important to determine whether you really have a silver certificate. It's very unlikely; the last $2 silver certificates were dated 1899. With one exception all $2 bills since then have been issued as either United States Notes or Federal Reserve Notes. The note's type is shown clearly in the banner across the top front.

That said, the majority of $2 bills printed in the last hundred years aren't hugely valuable. However some can retail for as much as several hundred dollars in top condition.

For a better estimate of your bill's value, find its date and what letter if any is next to the date. Most $2 bill values are already posted on this site so look for questions like "What is the value of a 1953 A US 2 dollar bill?", of course using the date and letter (if any) of your particular bill.