I don't want to be rude, but this honestly looks like you placed notes and symbols around randomly with 0 intent. Unfortunately, I can't listen to it to really determine its musical-ness since you provided no audio. On top of that, I can't see below the snare drum because you did the wrong page size. Despite these, I will attempt to provide something constructive.
1. There are several moments in the wind instruments where there is more than one note played at once. All wind and brass instruments can only play one note at a time, unless special techniques are used, which are notated a specific way.
2. Throughout the score, you use several markings that are either impossible, change nothing, or are contradictory. For example, none of the instruments shown on this score have sustain pedals, and yet you score pedal marks. You have some instances of the tempo marking Allegro Moderato repeating reduntantly, since there is no tempo change between. You have seemingly random crescendos and diminuendos and hairpins that overlap in contradictory ways. You also use the Volta 2 frequently despite not having any repeat bars, thus making it useless.
It seriously looks like you opened musescore, selected the preset symphony orchestra, placed notes randomly, then clicked and dragged things from the pallete panel, named it, and called it a day.
To me this reflects a absence of any knowledge of music theory, so first, I will suggest you take lessons on an instrument if you aren't already. This will give you a basic grasp of music theory. Next, I will suggest that you study these topics in depth:
- How to write a Melody
- How to write Harmony
- How to write with Musical Structure
- How to develop ideas
- Instrumentation
- How to use Voice leading
All of these can be studied pretty thoroughly simply with google. With knowledge of these things, you will be able to catch the attention of listeners with melody, provide context to the melody with harmony, give the piece coherency with structure, transform the melodies with development, bring colour to the music with instrumentation, and lead listeners ears with voice leading.
Hopefully all of this helps you in your journey as a composer. 🙂