The Red Seal $5 bills were circulated at the same time as the Silver Certificates. In average circulated condition they're worth about $6 per. Uncirculated, $40-$50.
The star at the end just means that it's a replacement bill for one that was misprinted. In other words, it's not all that great. However, if you can find the misprinted note, get a valuation on it. It could be worth bank.