It could be good, it could be mediocre, it could be bad.
If it shoots well as is, and it's sporterized, then there's no reason not to slap a scope on it and see if that helps. (Be aware that due to the low comb of the stock, your cheekweld will become a chinweld, resulting in less precise/consistent head position behind the glass.)
If it shoots well as is, and is not sporterized (full wood, matching parts, etc) the PLEASE FOR THE LOVE OF ALL OLD MILSURP RIFLES do not hack it up or bolt on a scope mount, drill it, mangle it, etc. Shoot it as is, and cherish your grand-dad's rifle the way he had it. If you need a precision rifle, you're better off buying a new-ish one and going from there. If you need to sell this one to buy it, then consider that as an option.
NS