Words that contain 'p' and end in 'ls'

How many words is it possible to make using the combination requested?
327.

Is there a distinct word from this page of word that has 'p' in and ends with 'ls' that could be considered as unique?
An example of a weird word from this page goes to 'sprawls'. The definition of 'sprawls' is as follows: "Small branches of a tree; twigs; sprays. [Prov. Eng.] Halliwell.".

Which word in particular from this list has the largest letter count?
'Pseudointellectuals' is the biggest word that our database could construct, containing 19 letters

What's the highest possible score you're able to get in Scrabble using this list of words that contain 'p' and end in 'ls'?
Since there are a myriad of words from which to select, your best bet is to choose 'oxyphils' which scores 23 points overall.

Is there any word on this page that jumps out as the most common?
As far as popular words go, there's 'pupils' which ranks as the 6298^th most common word.