Cheers dude!
The best piece of advice is, of course, daily practice
Aside from that, the big problem is usually rhythm, so reverse engineer the process. You need to fully understand what written music looks like, so listening to music while reading the score is a good skill to work on. Over time you will learn to associate the sounds you hear with the rhythms you see. Another way to improve on this is sightreading. Try the berklee book “melodic studies”. The method presented there is second to none, you learn to treat rhythms as words, this way you can recall any rhythm you read as you do when you read a word. Once you can start to see the rhythms of what you listen, there’s no stopping you!
Good luck!
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