Is methyl acidic or basic

Neither.!!!

'Methyl' is a functional group in organic chemistry.

Methyl is represented by ' CH3 - ' Where the opened ended bond is attached to the rest of the molecule.

e.g. methyl benzene, also known as 'toluene' is repsetend by C6H5(CH3). This is a benzene ring with one hydrogen atom displaced in favour of the 'methyl' functional group.

NB 'Methyl' appears in many different organic molecules.