Ford Ranger XLT will not shift into any gear except neutral when idling

If the clutch fluid was dry you probably need to replace the clutch slave cylinder. The clutch isn't releasing causing the gears to grind. If it were mine I would also replace the clutch master cylinder.

Thank you very much, Bob, for your answer. We'll have to see how it goes at the mechanic.

Got air bubble in clutch master cylinder , only way to get bubble out is remove and bench bleed master cylinder.

Transmission fluid is low needs to add up fluid only at operating temperature (idling in park then shut off engine wait 2 minutes then check the trans dipstick if fluid doesn't reach at the top peep hole then add the trans fluid, transmission lever position sensor needs to realign to Neutral position, check for crack transmission pan gasket, check the driveshaft seal for leaks.

I’ve got a 95 ford ranger I replaced the clutch and the clutch master cylinder and it’s not shifting at all what can it be