how to convert rows into columns in same table

CREATE TABLE Aver(ques_id int,qtxt varchar(20),opid int,score int,performance varchar(30))

 insert into Aver values( 1,'gdggf',1,10,'Excellent'),( 2,'6t7ik,ikik',2,12,'Good'),(1,'gdggf',3,3,'Average'),(1,'gdggf',4,4,'Poor')


 select * from Aver
 declare @tab1e table(Id int,Qtxt varchar(20),Excellent int,Good int,Average int,Poor int)

 insert into @tab1e(ID)
 select distinct ques_id from Aver

update T set T.Qtxt=A.qtxt,T.Excellent=A.score from @tab1e T inner Join Aver A on A.ques_id=T.Id where A.performance='Excellent'
update T set T.Qtxt=A.qtxt,T.Good=A.score from @tab1e T inner Join Aver A on A.ques_id=T.Id where A.performance='Good'
update T set T.Qtxt=A.qtxt,T.Average=A.score from @tab1e T inner Join Aver A on A.ques_id=T.Id where A.performance='Average'
update T set T.Qtxt=A.qtxt,T.Poor=A.score from @tab1e T inner Join Aver A on A.ques_id=T.Id where A.performance='Poor'

select * from @tab1e