i am confusing about the minor/major thing, can i solo with C minor scale in C major backing track or not??
In a word yes!
The whole point of the minor blues scale notes is that they produce a 'sweet and sour' effect against the major scale notes. So out of tune that they sound (sort of) right!
What happens with good blues players is that sometimes they bend the m3 up to a M3; although they also bend it half-way, and the listener 'hears' it go to M3, which, of course, matches perfectly with the I chord. It's also effective to give it a wide bend, as in vibrato, so it alternates between m3 and M3. The same happens with ♭7 and octave.
The ♭7 gives a Mixolydian feel to the piece.
The ♭5 can be considered a tritone substitution note. It's midway between 4 and 5, and could go on either way. But basically, it all works - in a bluesy way.
What doesn't work is the opposite. Using major blues notes over a minor sequence just doesn't.
Having said all that, you don't spectify the C major progression. If it's C - Dm - Em - F - G chances are it won't sound too good. Any combination of C7 F7 and G7, as in Blues, will help it work well.