how to use single quotations inside a transact sql statement

i want use single quotations inside a transact sql statement, then execute that statement.

for example my query is:

Select * FROM MyTable WHERE MyTable.Id = '1'

now i want use like this:

Declare @SQLQuery AS NVarchar(4000)
SET @SQLQuery = ' Select * FROM MyTable WHERE MyTable.Id = '1' '
Execute (@SQLQuery)

this not work, and this error occurred :

Invalid column name '1'

I know problem is quotations in left and right side of the 1

this is a sample and i want use of this way to a large query

of course, i want use local variable instead for example '1' and my local variable is varchar

any idea?