In The Name of Allah, The Most Merciful, The Bestower of Mercy.

Imam Abdul Aziz Bin Baz, may Allah have mercy upon him, said:

والمستهزئ بالعلماء، أو بطلبة العلم، أو بطالبات العلم، إذا كان مقصوده الاستهزاء بالدِّين؛ كفر.
أما إن كان يستهزئ بطالب العلم من أجل رثاثة ثيابه، أو من أجل عِلَّة فيه: من مرضٍ، أو شبه ذلك، أو عرجٍ، فهذا الاستهزاء منكر، وليس بكفرٍ، هذا منكر ومعصية.
أما إذا استهزأ به لدينه ولتقواه فهذا استهزاء بالدين -نعوذ بالله- يكون من الردّة عن الإسلام؛ لأنه استهزأ بالدِّين، إذا كان يتنقّص بالدين، ويرى أن الدين ناقص، ويرى أن الذين ينتسبون إليه ناقصون، وأن المنتسبين إلى غيره أوْلى منهم وأزكى؛ فهذا هو التنقص في الدين، وهذا هو الذي فيه الاستهزاء بالله وبآياته ورسوله

The one who mocks the scholars, students of knowledge, or female students of knowledge; if his intention is  to mock the religion, it constitutes disbelief. However, if one mocks a student of knowledge due to the tattered state of their clothing or a physical ailment, such as an illness or a disability, this mockery is an evil deed and not disbelief. It is an evil deed and a sin. As for if he mocks at an individual because of their religion (Islam) and because of their piety, this is mockery of religion—we seek refuge in Allah, and it becomes Riddah (apostasy from Islam) because he has mocked the religion. [Footnote a]

If he  belittles the religion, perceives it as deficient, and views its adherents as inferior, while considering those who ascribe to other than it as superior and more virtuous, this is tantamount to belittling the religion (or diminishing its worth). This is what carries mockery of Allah, His signs and Messenger. [1] [end of quote]

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Footnote a: It is imperative to emphasise unequivocally that the sole individuals authorised to render a judgment of apostasy against a Muslim are the upright scholars of Islam, and no others. For further information, please refer to this link. Who Ought To Pronounce Takfir and Establish the Hadd Punishment:

https://salafipublications.com/sps/sp.cfm?subsecID=MNJ09&articleID=MNJ090004&articlePages=1

[1]https://binbaz.org.sa/fatwas/21134/%D9%85%D8%A7-%D8%AD%D9%83%D9%85-%D8%A7%D9%84%D8%A7%D8%B3%D8%AA%D9%87%D8%B2%D8%A7%D8%A1-%D8%A8%D8%A7%D9%84%D8%AF%D9%8A%D9%86-%D9%88%D8%A7%D9%84%D9%85%D8%AA%D9%85%D8%B3%D9%83%D9%8A%D9%86-%D8%A8%D9%87 paraphrased