use tempdb
go

create table dbo.testresults (
	username nvarchar(128)not null,
	answer1 varchar(10) null,
	answer2 varchar(10) null,
	answer3 varchar(10) null,
	answer4 varchar(10) null,
	answer5 varchar(10) null,
	answer6 varchar(10) null,
	answer7 varchar(10) null,
	answer8 varchar(10) null,
	answer9 varchar(10) null,
	answer10 varchar(10) null
);

insert dbo.TestResults(username, answer1, answer2, answer3, answer4, answer5, answer6, answer7, answer8, answer9, answer10)
select 'test', 'wrong', 'wrong', 'wrong', 'wrong', 'wrong', 'wrong', 'wrong', 'wrong', 'wrong', 'wrong'

insert dbo.TestResults(username, answer1, answer2, answer3, answer4, answer5, answer6, answer7, answer8, answer9, answer10)
select 'test2', 'wrong', 'right', 'right', 'right', 'wrong', 'wrong', 'wrong', 'wrong', 'wrong', 'right'

select 
	tr.username,
	total.score,
	total.answers
from dbo.testresults tr
	cross apply (
		select sum (answers.score) as score, count(*) as answers
		from (
				select case tr.answer1 when 'right' then 1 else 0 end as score
				union all
				select case tr.answer2 when 'right' then 1 else 0 end as score
				union all
				select case tr.answer3 when 'right' then 1 else 0 end as score
				union all
				select case tr.answer4 when 'right' then 1 else 0 end as score
				union all
				select case tr.answer5 when 'right' then 1 else 0 end as score
				union all
				select case tr.answer6 when 'right' then 1 else 0 end as score
				union all
				select case tr.answer7 when 'right' then 1 else 0 end as score
				union all
				select case tr.answer8 when 'right' then 1 else 0 end as score
				union all
				select case tr.answer9 when 'right' then 1 else 0 end as score
				union all
				select case tr.answer10 when 'right' then 1 else 0 end as score
		) answers
	) total