How do make a menu iconbutton

To add a menu 'IconButton' to your 'TopAppBar' while using your existing 'Drawer' function, you can wrap the existing 'Drawer' function within a 'Scaffold' composable - you can follow a full tutorial at - Jetpack Compose: What’s a Scaffold?[^]

You can adjust teh code I used below to suit your need as you did not give a lot of information -

import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material.*
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.unit.dp
import kotlinx.coroutines.launch

@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun DrawerContent() {
    val items = listOf(
        DrawerItem(
            Icons.Default.Favorite,
            "Favourite"
        ),
        DrawerItem(
            Icons.Default.Add,
            "Add"
        ),
        DrawerItem(
            Icons.Default.AccountBox,
            "Account"
        )
    )

    val drawerState = rememberDrawerState(initialValue = DrawerValue.Closed)
    val scope = rememberCoroutineScope()
    val selectedItem = remember { mutableStateOf(items[0]) }

    ModalDrawer(
        drawerState = drawerState,
        drawerContent = {
            ModalDrawerSheet {
                Image(
                    painter = painterResource(id = R.drawable.globologo),
                    contentDescription = "Header Image",
                    modifier = Modifier
                        .fillMaxWidth()
                        .height(150.dp)
                        .padding(all = 10.dp),
                    contentScale = ContentScale.Inside
                )
                Spacer(modifier = Modifier.height(10.dp))
                items.forEach { item ->
                    NavigationDrawerItem(
                        label = {
                            Text(text = item.title)
                        },
                        selected = selectedItem.value == item,
                        icon = {
                            Icon(
                                imageVector = item.imageVector,
                                contentDescription = item.title
                            )
                        },
                        onClick = {
                            scope.launch {
                                selectedItem.value = item
                                drawerState.close()
                            }
                        }
                    )
                }
            }
        },
        content = {
            TopAppBar(
                title = { Text(text = "App Title") },
                navigationIcon = {
                    IconButton(onClick = {
                        scope.launch {
                            drawerState.open()
                        }
                    }) {
                        Image(
                            painter = painterResource(id = R.drawable.hamburgermenu),
                            contentDescription = "Menu",
                            modifier = Modifier.size(24.dp)
                        )
                    }
                }
            ) {
                //Add more actions here if needed...
            }
        }
    )
}

@Composable
fun NavigationDrawerItem(
    label: @Composable () -> Unit,
    selected: Boolean,
    icon: @Composable () -> Unit,
    onClick: () -> Unit
) {
    //Your current use of the NavigationDrawerItem...
}

@Composable
fun DrawerItem(imageVector: ImageVector, title: String) {
    //Your current implementation of the DrawerItem...
}