Sorry son, but scratches like these on vinyl can not be repaired...
Some company's try to sell unknowing people all kinds of chemicals - but they only make it worse.
And there is NO exception!
I'm afraid the plop will be there for eternity.
Two possible things for you to do:
Get used to the plop, if it is not TOO loud.
(Hey, us people from the vinyl-era once had enourmous trouble getting used to hearing Queen on CD because we MISSED our beloved plops! ;-)
Or buy a new copy of the album. Lucky for you, it's not too difficult to find a regular copy of Queen II for a nice price!