Correction to Prior Answer
A bill's serial number is a security and bookkeeping feature but rarely helps to ID a bill for valuation, especially when it's incomplete as yours is. What matters is the bill's seal color, date, and what letter if any is next to the date. Even if it's a Federal Reserve Note, older ones may be worth more than $10 depending on the specific date and series letter (the letter next to the date).
Please check your bill again and post a new, separate question. Alternately, look for the question "What is the value of a (date) (letter) US 10 dollar bill?" because most $10 bill questions have already been posted and answered.
If it is a "Federal Reserve Note", then the value is ten dollars.
If it's a "Silver Certificate", then it may be worth more; talk to a numismatist to see if there is any premium for it. The value would depend on the condition of the bill.
$20
$10
As you have seen in many other postings, a bill's serial number almost never has anything to do with its value.
Worth about 4 to 10 dollar depending on condition
The "8894" serial number is a red flag. Regardless of denomination, nearly all Bank of the United States bills with that date and serial number are modern reproductions that have no value to collectors.
Depends on year and how low the serial number is.
The percentage of a partial bill really has little to do with its value. Any bill is worth its face value if it contains a complete serial number and any part of the other serial number.
$10
$20
The serial number alone isn't enough to assign value, but rather the series year and the condition. Without more information, it's assumed to be worth one dollar.
Face value.
The value is more dependent on the year (series) of the bill. The serial number by itself isn't enough information.
As you have seen in many other postings, a bill's serial number almost never has anything to do with its value.
$20
$5
The value is determined by the series (date) and condition.
The serial number isn't really useful in giving a value. Post a new question and include information like the series (date) and condition.