The input in the array list is not completely reversed and it just filters only two when using FOR loop

Because pop on tweet affects your loop iterator.
You can easily prevent this by shallow copying(tweet[:]):

tweet = ['hi', 'hope', 'hippo', 'bow']
temp = []
for i in tweet[:]:
    temp.append(tweet.pop())
print(temp)

output:

['bow', 'hippo', 'hope', 'hi']

By the way, you can reverse a list by builtin function reversed:

tweet = ['hi', 'hope', 'hippo', 'bow']
temp = list(reversed(tweet))
print(temp)

output:

['bow', 'hippo', 'hope', 'hi']

Or, you can use slicing(answered by @Ch3steR):

tweet = ['hi', 'hope', 'hippo', 'bow']
temp = tweet[::-1]
print(temp)

As already pointed there exist built-in reversed function for that task, but I want to point one thing. In your code you do for i in tweet: but then do not use that i, so basically you are doing same action independently from current element, thus you might use for _ in range(len(tweet)) to execute it n times, where n is number of elements (length) of tweet following way:

tweet=['hi','hope','hippo','bow']
temp=[]
for _ in range(len(tweet)):
    temp.append(tweet.pop())           
print(temp)

Output:

['bow', 'hippo', 'hope', 'hi']

_ by convention denotes variable which I do not care about.

you can use the built-in function reversed:

print(*reversed(tweet))

output:

bow hippo hope hi

the issue with your code it is because you are changing the size of your tweet while you are iterating over in a for loop

if you want to use a for loop:

tweet=['hi','hope','hippo','bow']
temp=[]
for e in tweet[::-1]:
    temp.append(e)           
print(temp)